{"id":627,"date":"2026-01-11T01:40:23","date_gmt":"2026-01-10T16:40:23","guid":{"rendered":"https:\/\/japper-tapchka.blog\/Diary\/?p=627"},"modified":"2026-09-26T12:25:32","modified_gmt":"2026-09-26T03:25:32","slug":"tokyo-2025-physics-1","status":"publish","type":"post","link":"https:\/\/japper-tapchka.blog\/Diary\/tokyo-2025-physics-1\/","title":{"rendered":"\u30102025\u6771\u5927\u7269\u7406 \u7b2c1\u554f\u3011\u529b\u5b66\u3092\u9ad8\u6821\u7269\u7406\u3067\u5fb9\u5e95\u89e3\u8aac\uff5c\u56f3\u89e3\u30fb\u30a4\u30e1\u30fc\u30b8\u4ed8\u304d"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u4eca\u56de\u306f\u6771\u4eac\u5927\u5b662025\u5e74\u5ea6\u5165\u8a66\u306e\u7269\u7406\u7b2c1\u554f\u306b\u3064\u3044\u3066\u3001\u7d30\u304b\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\uff01\u554f\u984c\u306f\u89e3\u8aac\u306e\u90fd\u5408\u4e0a\u3001\u90e8\u5206\u7684\u306b\u63b2\u8f09\u3057\u3066\u304a\u308a\u307e\u3059\u304c\u3001\u30d5\u30ebPDF\u304c\u6b32\u3057\u3044\u5834\u5408\u306f<a data-type=\"link\" data-id=\"https:\/\/www.u-tokyo.ac.jp\/ja\/admissions\/undergraduate\/e01_04.html\" href=\"https:\/\/www.u-tokyo.ac.jp\/ja\/admissions\/undergraduate\/e01_04.html\">\u5927\u5b66\u306e\u30db\u30fc\u30e0\u30da\u30fc\u30b8<\/a>\u3084\u4e88\u5099\u6821\u306e\u30b5\u30a4\u30c8\u304b\u3089\u5165\u624b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/mark><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u524d\u63d0<\/h1>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"443\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/53458f2e54db128fed25ff460ebba43b-1024x443.png\" alt=\"\" class=\"wp-image-628\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/53458f2e54db128fed25ff460ebba43b-1024x443.png 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/53458f2e54db128fed25ff460ebba43b-300x130.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/53458f2e54db128fed25ff460ebba43b-768x332.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/53458f2e54db128fed25ff460ebba43b.png 1248w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">[I] \u304a\u3082\u308aA\u304c\u56fa\u5b9a\u3055\u308c\u3066\u3044\u308b\u6642<\/h1>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"339\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/205781ecb80c329ebcc3599c4f1c4da7-1024x339.png\" alt=\"\" class=\"wp-image-629\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/205781ecb80c329ebcc3599c4f1c4da7-1024x339.png 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/205781ecb80c329ebcc3599c4f1c4da7-300x99.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/205781ecb80c329ebcc3599c4f1c4da7-768x254.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/205781ecb80c329ebcc3599c4f1c4da7.png 1248w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"878\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/7042743ec19407302893e8bfce7eada5-1024x878.png\" alt=\"\" class=\"wp-image-633\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/7042743ec19407302893e8bfce7eada5-1024x878.png 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/7042743ec19407302893e8bfce7eada5-300x257.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/7042743ec19407302893e8bfce7eada5-768x658.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/7042743ec19407302893e8bfce7eada5.png 1248w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">(1) \u304a\u3082\u308aB\u304c\u5e8a\u304b\u3089\u96e2\u308c\u308b\u3068\u304d\u306e\u5916\u529b\u306e\u5927\u304d\u3055<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u304a\u3082\u308aB\u306f\u304a\u3082\u308aC\u3068\u7e4b\u3052\u3089\u308c\u305f\u68d2\u306b\u5f15\u3063\u5f35\u3089\u308c\u3001\u5e8a\u304b\u3089\u306e\u5782\u76f4\u6297\u529b\u304c0\u306b\u306a\u3063\u305f\u3068\u304d\u306b\u96e2\u308c\u308b\u3002\u304a\u3082\u308aB\u3068\u304a\u3082\u308aC\u305d\u308c\u305e\u308c\u306e\u529b\u306b\u3064\u308a\u5408\u3044\u3092\u8003\u3048\u307e\u3057\u3087\u3046\uff01<\/mark><\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-1_B-1.png\" alt=\"\" class=\"wp-image-767 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-1_B-1.png 500w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-1_B-1-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-1_B-1-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">AB, AC, BC\u3092\u7e4b\u3050\u68d2\u304c\u304a\u3082\u308a\u306b\u4e0e\u3048\u308b\u529b\u3092\u305d\u308c\u305e\u308c\ud835\udc39<sub>\ud835\udc34\ud835\udc35<\/sub>, \ud835\udc39<sub>\ud835\udc34\ud835\udc36<\/sub>, \ud835\udc39<sub>\ud835\udc35\ud835\udc36<\/sub>\u3068\u3057\u3001B\u306e\u5e8a\u304b\u3089\u306e\u5782\u76f4\u6297\u529b\u3092\ud835\udc41<sub>\ud835\udc35<\/sub>\u3068\u3059\u308b\u3068\u529b\u306e\u3064\u308a\u5408\u3044\u3088\u308a\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{F_{BC} \\sin \\frac{ \\pi }{4} + N_B = mg} $$\n$$ \\color{black}{F_{BC} \\cos \\frac{ \\pi }{4} = F_{AB}} $$\n$$ \\color{black}{F_{AC} = mg + F_{BC} \\cos \\frac{ \\pi }{4} } $$\n$$ \\color{black}{F = F_{BC} \\sin \\frac{ \\pi }{4} } $$<script id=\"wp-hooks-js\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-includes\/js\/dist\/hooks.min.js?ver=f0f188028580e8dc1255\"><\/script>\n<script id=\"wp-i18n-js\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-includes\/js\/dist\/i18n.min.js?ver=1dfe7db3940c23ea9216\"><\/script>\n<script id=\"wp-i18n-js-after\">\nwp.i18n.setLocaleData( { 'text direction\\u0004ltr': [ 'ltr' ] } );\n\/\/# sourceURL=wp-i18n-js-after\n<\/script>\n<script  async id=\"mathjax-js\" src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/mathjax\/2.7.7\/MathJax.js?config=TeX-MML-AM_CHTML\"><\/script>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\"><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-1_C-1.png\" alt=\"\" class=\"wp-image-768 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-1_C-1.png 500w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-1_C-1-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-1_C-1-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u3053\u3067\u3001\u304a\u3082\u308aB\u304c\u5e8a\u304b\u3089\u96e2\u308c\u308b\u3068\u304d\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{N_B = 0} $$\n$$ \\color{black}{ \\therefore F_{AB} = F = mg} $$\n$$ \\color{black}{F_{BC} = \\sqrt{2} mg} $$\n$$ \\color{black}{F_{AC} = 2mg} $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u203b\u89e3\u7b54\u3068\u3057\u3066\u306f\ud835\udc39\u6c42\u3081\u308b\u306e\u306b\u5fc5\u8981\u306a\u90e8\u5206\u3060\u3051\u3067OK\u3067\u3059\uff01<\/mark><\/p>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3010\u5225\u89e3\u3011\u525b\u4f53\u3068\u3057\u3066\u529b\u306e\u30e2\u30fc\u30e1\u30f3\u30c8\u3092\u8003\u3048\u308b\u3068\u3001\u68d2\u306b\u50cd\u304f\u529b\u3092\u7121\u8996\u3067\u304d<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u307e\u3059\uff01<\/mark><\/mark><\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-1_other-1.png\" alt=\"\" class=\"wp-image-775 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-1_other-1.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-1_other-1-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-1_other-1-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">3\u3064\u306e\u304a\u3082\u308a\u3068\u68d2\u30921\u3064\u306e\u525b\u4f53\u3068\u3057\u3066\u8003\u3048\u308b\u3068\u3001\u5de6\u306e\u56f3\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u304a\u3082\u308aA\u306e\u307e\u308f\u308a\u306e\u529b\u306e\u30e2\u30fc\u30e1\u30f3\u30c8\u306e\u3064\u308a\u5408\u3044\u3088\u308a\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{Fd + N_B d = mgd} $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u3053\u3067\u3001\u304a\u3082\u308aB\u304c\u5e8a\u304b\u3089\u96e2\u308c\u308b\u3068\u304d\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{N_B = 0} $$\n$$ \\color{black}{ \\therefore F = mg} $$<\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(2) \u7269\u4f53C\u304c\u5e8a\u306b\u63a5\u3059\u308b\u307e\u3067\u306b\u5916\u529b\u304c\u3059\u308b\u4ed5\u4e8b<\/h2>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-2_theta-1.png\" alt=\"\" class=\"wp-image-786 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-2_theta-1.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-2_theta-1-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-2_theta-1-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u304a\u3082\u308aA\u3068\u304a\u3082\u308aB\u3092\u7e4b\u3050\u68d2\u3068\u5e8a\u306e\u306a\u3059\u89d2\u3092\ud835\udf03\u3068\u3057\u3001\u5e8a\u306e\u4f4d\u7f6e\u3092\u4f4d\u7f6e\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u57fa\u6e96\u9762\u3068\u3057\u3066\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u3068\u4ed5\u4e8b\u306e\u95a2\u4fc2\u304b\u3089\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\begin{align}\n    \\color{black}{mgd + W} &amp; = \\color{black}{mgd \\sin \\theta + mgd \\sin \\left ( \\frac{ \\pi }{2} &#8211; \\theta \\right )} \\\\\n    &amp; \\color{black}{= mgd( \\sin \\theta + \\cos \\theta )} \\\\\n    &amp; \\color{black}{= \\sqrt{2} mgd \\sin \\left ( \\theta + \\frac{ \\pi }{4} \\right )}\n\\end{align} $$<\/div>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\therefore W = mgd \\left ( \\sqrt{2} \\sin \\left ( \\theta + \\frac{ \\pi }{4} \\right ) &#8211; 1 \\right )} $$<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-2_mov-1-1024x1024.gif\" alt=\"\" class=\"wp-image-818 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-2_mov-1-1024x1024.gif 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-2_mov-1-300x300.gif 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-2_mov-1-150x150.gif 150w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_1-2_mov-1-768x768.gif 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\ud835\udc4a\u304c\u6700\u5927\u5024\u3068\u306a\u308b\u3068\u304d\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$  \\color{black}{ \\theta = \\frac{ \\pi }{4} } $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3067\u3042\u308a\u3001\ud835\udc4a\u304c\u3053\u306e\u5024\u3092\u8d85\u3048\u308c\u3070\u3001\u304a\u3082\u308aC\u306f\u5e8a\u306b\u5230\u9054\u3057\u307e\u3059\u3002<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\therefore W_0 = mgd ( \\sqrt{2} &#8211; 1)} $$<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u76f4\u611f\u7684\u306b\u306f\u3001\u304a\u3082\u308aB\u306e\u5e8a\u304b\u3089\u306e\u9ad8\u3055\u304c\u304a\u3082\u308aC\u3092\u8d8a\u3048\u308c\u3070\u3001\u529b\u3092\u52a0\u3048\u306a\u304f\u3066\u3082\u304a\u3082\u308aC\u304c\u5e8a\u306b\u885d\u7a81\u3059\u308b\u305f\u3081\u3001\u5fc5\u8981\u306a\u5916\u529b\u306b\u3088\u308b\u4ed5\u4e8b\u306f\u305d\u3053\u306b\u5230\u9054\u3059\u308b\u307e\u3067\u306e\u3082\u306e\uff01<\/mark><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">[II] \u304a\u3082\u308aA\u3092\u56fa\u5b9a\u305b\u305a\u306b\u6ed1\u308a\u51fa\u3059\u307e\u3067<\/h1>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"445\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/db96a271966879936a8f13c3a31823e7-1024x445.png\" alt=\"\" class=\"wp-image-630\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/db96a271966879936a8f13c3a31823e7-1024x445.png 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/db96a271966879936a8f13c3a31823e7-300x130.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/db96a271966879936a8f13c3a31823e7-768x334.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/db96a271966879936a8f13c3a31823e7.png 1248w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">(1)\/(2) \u9759\u6b62\u4e2d\u306e\u304a\u3082\u308aB, \u304a\u3082\u308aA\u306e\u5782\u76f4\u6297\u529b<\/h2>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_A.png\" alt=\"\" class=\"wp-image-791 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_A.png 500w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_A-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_A-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">I(1)\u3068\u540c\u69d8\u306b\u3001\u5404\u304a\u3082\u308a\u306e\u529b\u306e\u3064\u308a\u5408\u3044\u3092\u8003\u3048\u308b\u3002\u304a\u3082\u308aA\u306e\u5e8a\u304b\u3089\u306e\u5782\u76f4\u6297\u529b\u306f\ud835\udc41<sub>\ud835\udc34<\/sub>, \u304a\u3082\u308aA\u306e\u9759\u6b62\u6469\u64e6\u529b\u3092\ud835\udc53\u3068\u3059\u308b\u3068\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{N_A = mg +F_{AC}} $$\n$$ \\color{black}{F_{AB} = f} $$<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_B.png\" alt=\"\" class=\"wp-image-772 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_B.png 500w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_B-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_B-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{F_{BC} \\sin \\frac{ \\pi }{4} + N_B = mg} $$\n$$ \\color{black}{F_{BC} \\cos \\frac{ \\pi }{4} = F_{AB}} $$\n$$ \\color{black}{F_{AC} = mg + F_{BC} \\cos \\frac{ \\pi }{4} } $$\n$$ \\color{black}{F = F_{BC} \\sin \\frac{ \\pi }{4} } $$<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_C-1.png\" alt=\"\" class=\"wp-image-773 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_C-1.png 500w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_C-1-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_C-1-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\therefore F_{AB} = F} $$\n$$ \\color{black}{F_{AC} = mg + F} $$\n$$ \\color{black}{F_{BC} = \\sqrt{2} F} $$\n$$ \\color{black}{N_B = mg &#8211; F} $$\n$$ \\color{black}{N_A = 2mg + F} $$\n$$ \\color{black}{f = F} $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u203b\u89e3\u7b54\u3068\u3057\u3066\u306f<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\ud835\udc41<sub>\ud835\udc35<\/sub><\/mark>, \ud835\udc41<sub>\ud835\udc34<\/sub><\/mark>\u6c42\u3081\u308b\u306e\u306b\u5fc5\u8981\u306a\u90e8\u5206\u3060\u3051\u3067OK\u3067\u3059\uff01<\/mark><\/p>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3010\u5225\u89e3\u3011\u307e\u305f\u307e\u305f\u3001\u525b\u4f53\u3068\u3057\u3066\u529b\u306e\u30e2\u30fc\u30e1\u30f3\u30c8\u3092\u8003\u3048\u308b\u3068\u3001\u68d2\u306b\u50cd\u304f\u529b\u3092\u7121\u8996\u3067\u304d<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u307e\u3059\uff01<\/mark><\/mark><\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_other.png\" alt=\"\" class=\"wp-image-778 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_other.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_other-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_2-1_other-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">3\u3064\u306e\u304a\u3082\u308a\u3068\u68d2\u30921\u3064\u306e\u525b\u4f53\u3068\u3057\u3066\u8003\u3048\u308b\u3068\u3001\u5de6\u306e\u56f3\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u525b\u4f53\u306e\u529b\u306e\u3064\u308a\u5408\u3044<\/mark><\/mark>\u3068<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u304a\u3082\u308aA\u306e\u307e\u308f\u308a\u306e\u529b\u306e\u30e2\u30fc\u30e1\u30f3\u30c8\u306e\u3064\u308a\u5408\u3044\u3088\u308a\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{N_A + N_B = mg + mg + mg} $$\n$$ \\color{black}{F = f} $$\n$$ \\color{black}{Fd + N_Bd = mgd} $$<\/div>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\therefore N_B = mg &#8211; F} $$\n$$ \\color{black}{N_A = 2mg + F} $$\n$$ \\color{black}{f = F} $$<\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(3) \u304a\u3082\u308a\u304c\u6ed1\u308a\u51fa\u3059\u3068\u304d\u306e\u5916\u529b\u306e\u5927\u304d\u3055<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u304a\u3082\u308aB\u304c\u5e8a\u306b\u63a5\u3057\u305f\u307e\u307e\u52d5\u304f=\u3053\u306e\u7269\u4f53\u7cfb\u304c\u56de\u8ee2\u305b\u305a\u306b\u6ed1\u308b\uff01\uff01\u6ed1\u308b\u76f4\u524d\u306f\u9759\u6b62\u6469\u64e6\u529b\u304c\u6700\u5927\u6469\u64e6\u529b\u3067\u3042\u308b\u305f\u3081\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{f = \\mu N_A} $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3088\u3063\u3066\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{f = F = \\mu (2mg + F)} $$\n$$ \\color{black}{ \\therefore F = \\frac{2 \\mu}{1 &#8211; \\mu } mg} $$<\/div>\n\n\n\n<h1 class=\"wp-block-heading\">[III] \u304a\u3082\u308aA\u3092\u56fa\u5b9a\u305b\u305a\u306b\u6ed1\u308a\u51fa\u3057\u305f\u3042\u3068<\/h1>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"478\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/89f528a365dd63b9824d8a3ecb41774c-1024x478.png\" alt=\"\" class=\"wp-image-631\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/89f528a365dd63b9824d8a3ecb41774c-1024x478.png 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/89f528a365dd63b9824d8a3ecb41774c-300x140.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/89f528a365dd63b9824d8a3ecb41774c-768x359.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/89f528a365dd63b9824d8a3ecb41774c.png 1248w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"907\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/9d88a75090eafc8222dd5cadf28103e5-1024x907.png\" alt=\"\" class=\"wp-image-632\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/9d88a75090eafc8222dd5cadf28103e5-1024x907.png 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/9d88a75090eafc8222dd5cadf28103e5-300x266.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/9d88a75090eafc8222dd5cadf28103e5-768x681.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/11\/9d88a75090eafc8222dd5cadf28103e5.png 1248w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">(1) \u7b49\u901f\u76f4\u7dda\u904b\u52d5\u3059\u308b\u305f\u3081\u306e\u5916\u529b\u306e\u5927\u304d\u3055<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u7b49\u901f\u76f4\u7dda\u904b\u52d5\u3092\u3057\u3066\u3044\u308b\u3068\u304d\u3001\u529b\u306f\u3064\u308a\u5408\u3063\u3066\u3044\u308b\u305f\u3081\u3001II(1)\/(2)\u3068\u540c\u3058\u5f0f\u3067\u8003\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff01\u305f\u3060\u3057\u3001\u304a\u3082\u308aA\u306b\u306f\u305f\u3089\u304f\u6469\u64e6\u529b\u306f\u9759\u6b62\u6469\u64e6\u529b\ud835\udc53\u3067\u306f\u306a\u304f\u3001\u52d5\u6469\u64e6\u529b\ud835\udc53\u2019\u3068\u306a\u308a\u307e\u3059\u3002<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{f&#8217; = \\mu&#8217; N_A} $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u308c\u3092II(1)\/(2)\u306e\u5f0f\u306b\u5f53\u3066\u306f\u3081\u308b\u3068\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{F = f&#8217; = \\mu &#8216; N_A} $$\n$$ \\color{black}{ \\therefore F = \\frac{2 \\mu &#8216;}{1 &#8211; \\mu &#8216;} mg} $$<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(2) \u5916\u529b\u3092\u52a0\u3048\u308b\u306e\u3092\u3084\u3081\u305f\u3068\u304d\u306e\u304a\u3082\u308aA\u306e\u5782\u76f4\u6297\u529b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">II(1)\/(2)\u3068\u540c\u69d8\u306b\u30013\u3064\u306e\u304a\u3082\u308a\u306e\u304a\u3051\u308b\u904b\u52d5\u65b9\u7a0b\u5f0f\u3084\u529b\u306e\u3064\u308a\u5408\u3044\u3092\u7acb\u3066\u307e\u3057\u3087\u3046\uff01<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{N_A = mg +F_{AC}} $$\n$$ \\color{black}{ma = f&#8217; &#8211; F_{AB}} $$\n$$ \\color{black}{F_{BC} \\sin \\frac{ \\pi }{4} + N_B = mg} $$\n$$ \\color{black}{ma = F_{AB} &#8211; F_{BC} \\cos \\frac{ \\pi }{4}} $$\n$$ \\color{black}{F_{AC} = mg + F_{BC} \\cos \\frac{ \\pi }{4} } $$\n$$ \\color{black}{ma = F_{BC} \\sin \\frac{ \\pi }{4} } $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u308c\u3092\u89e3\u304f\u3068\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\therefore f&#8217; = 3ma} $$\n$$ \\color{black}{F_{AB} = 2ma} $$\n$$ \\color{black}{F_{AC} = m(g + a)} $$\n$$ \\color{black}{F_{BC} = \\sqrt{2} ma} $$\n$$ \\color{black}{N_B = m(g &#8211; a)} $$\n$$ \\color{black}{N_A = m(2g + a)} $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u203b\u89e3\u7b54\u3068\u3057\u3066\u306f<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\ud835\udc41<sub>\ud835\udc35<\/sub><\/mark><\/mark>\u6c42\u3081\u308b\u306e\u306b\u5fc5\u8981\u306a\u90e8\u5206\u3060\u3051\u3067OK\u3067\u3059\uff01<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3010\u5225\u89e3\u3011\u307e\u305f\u307e\u305f\u307e\u305f\u3001\u525b\u4f53\u3068\u3057\u3066\u529b\u306e\u30e2\u30fc\u30e1\u30f3\u30c8\u3092\u8003\u3048\u308b\u3068\u3001\u68d2\u306b\u50cd\u304f\u529b\u3092\u7121\u8996\u3067\u304d\u307e\u3059\uff01<\/mark><\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_3-2_force.png\" alt=\"\" class=\"wp-image-781 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_3-2_force.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_3-2_force-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_3-2_force-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">3\u3064\u306e\u304a\u3082\u308a\u3068\u68d2\u30921\u3064\u306e\u525b\u4f53\u3068\u3057\u3066\u8003\u3048\u308b\u3068\u3001\u5de6\u306e\u56f3\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u525b\u4f53\u306e\u904b\u52d5\u65b9\u7a0b\u5f0f\u3001\u529b\u306e\u3064\u308a\u5408\u3044<\/mark>\u3088\u308a\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{N_A + N_B = mg + mg + mg} $$\n$$ \\color{black}{3ma = f&#8217;} $$<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_3-2_moment.png\" alt=\"\" class=\"wp-image-782 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_3-2_moment.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_3-2_moment-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2026\/01\/Tokyo2025-1_3-2_moment-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u304a\u3082\u308aA\u306e\u307e\u308f\u308a\u306e\u529b\u306e\u30e2\u30fc\u30e1\u30f3\u30c8\u306e\u3064\u308a\u5408\u3044\u3092\u8003\u3048\u307e\u3059\u3002\u3053\u306e\u6642\u3001\u304a\u3082\u308aA\u306f\u5de6\u5411\u304d\u306e\u52a0\u901f\u5ea6\u3067\u6e1b\u901f\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u304a\u3082\u308aA\u304b\u3089\u898b\u305f\u4f53\u7cfb\u3067\u8003\u3048\u307e\u3059\u3002<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{mad + N_Bd = mgd} $$\n$$ \\color{black}{ \\therefore N_B = m(g &#8211; a)} $$\n$$ \\color{black}{N_A = m(2g + a)} $$<\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(3) \u5916\u529b\u3092\u52a0\u3048\u308b\u306e\u3092\u3084\u3081\u305f\u3068\u304d\u306e\u6e1b\u901f\u52a0\u901f\u5ea6<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u6e1b\u901f\u4e2d\u3067\u3082\u3001\u304a\u3082\u308aA\u306b\u306f\u52d5\u6469\u64e6\u529b\u304c\u50cd\u304f\u305f\u3081\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{f&#8217; = \\mu &#8216; N_A} $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u308c\u3092III(2)\u306e\u5f0f\u306b\u5f53\u3066\u306f\u3081\u308b\u3068\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{f&#8217; = 3ma = \\mu&#8217; \\{ m (2g + a) \\} } $$\n$$ \\color{black}{ \\therefore a = \\frac{2 \\mu &#8216;}{3 &#8211; \\mu &#8216;} g} $$<\/div>\n\n\n\n<h1 class=\"wp-block-heading\">\u3042\u3068\u304c\u304d<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3044\u304b\u304c\u3067\u3057\u305f\u3067\u3057\u3087\u3046\u304b\uff1f\u6771\u4eac\u5927\u5b66\u306e\u554f\u984c\u3067\u306f\u3001\u4eca\u56de\u306e\u5225\u89e3\u306e\u3088\u3046\u306b1\u3064\u304b2\u3064\u306e\u5f0f\u3092\u7acb\u3066\u3089\u308c\u308c\u3070\u7b54\u3048\u3092\u51fa\u305b\u308b\u3082\u306e\u306e\u3001\u7acb\u5f0f\u307e\u3067\u306e\u767a\u60f3\u304c\u5c11\u3057\u96e3\u3057\u3044\u50be\u5411\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u5b9f\u306f\u6ce5\u81ed\u304f\u5f0f\u3092\u8907\u6570\u9023\u7acb\u3055\u305b\u308c\u3070\u7b54\u3048\u306b\u8fbf\u308a\u7740\u304f\u3053\u3068\u3082\u3042\u308a\u307e\u3059\uff01\u89e3\u7b54\u7528\u7d19\u306b\u66f8\u304f\u3068\u304d\u306f\u3001\u6574\u7406\u3057\u3066\u5fc5\u8981\u306a\u90e8\u5206\u3060\u3051\u66f8\u304f\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002\u6642\u9593\u306f\u304b\u304b\u308a\u307e\u3059\u304c\u3001\u7acb\u5f0f\u306b\u8e93\u3044\u3066\u7b54\u3048\u306b\u5c0e\u3051\u306a\u3044\u3088\u308a\u306f\u3044\u3044\u3067\u3059\u306d\uff01<\/mark><\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/japper-tapchka.blog\/Diary\/tokyo-2025-physics-1\/\">\u7b2c3\u554f<\/a><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/japper-tapchka.blog\/Diary\/tokyo-tech-2025-physics-1\/\">\u6771\u5de5\u5927\u3078<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/japper-tapchka.blog\/Diary\/tohoku-2025-physics-1\/\">\u6771\u5317\u5927\u3078<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u56de\u306f\u6771\u4eac\u5927\u5b662025\u5e74\u5ea6\u5165\u8a66\u306e\u7269\u7406\u7b2c1\u554f\u306b\u3064\u3044\u3066\u3001\u7d30\u304b\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\uff01\u554f\u984c\u306f\u89e3\u8aac\u306e\u90fd\u5408\u4e0a\u3001\u90e8\u5206\u7684\u306b\u63b2\u8f09\u3057\u3066\u304a\u308a\u307e\u3059\u304c\u3001\u30d5\u30ebPDF\u304c\u6b32\u3057\u3044\u5834\u5408\u306f\u5927\u5b66\u306e\u30db\u30fc\u30e0\u30da\u30fc\u30b8\u3084\u4e88\u5099\u6821\u306e\u30b5\u30a4\u30c8\u304b\u3089\u5165\u624b\u3057\u3066\u304f\u3060\u3055\u3044\u3002 \u524d\u63d0 [I]  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