{"id":4748,"date":"2023-10-20T09:45:38","date_gmt":"2023-10-20T00:45:38","guid":{"rendered":"https:\/\/torisetudy.com\/?p=4748"},"modified":"2025-04-03T00:58:55","modified_gmt":"2025-04-02T15:58:55","slug":"%e6%83%91%e6%98%9f%e9%81%8b%e5%8b%95%e3%81%ae%e5%95%8f%e9%a1%8c%e3%81%b8%e3%81%ae%e3%82%a2%e3%83%97%e3%83%ad%e3%83%bc%e3%83%81","status":"publish","type":"post","link":"https:\/\/torisetudy.com\/?p=4748","title":{"rendered":"\u60d1\u661f\u904b\u52d5\u306e\u554f\u984c\u3078\u306e\u30a2\u30d7\u30ed\u30fc\u30c1"},"content":{"rendered":"\n<div id=\"toc_container\" class=\"no_bullets\"><p class=\"toc_title\">\u76ee\u6b21<\/p><ul class=\"toc_list\"><li><a href=\"#i\"><span class=\"toc_number toc_depth_1\">1<\/span> \u60d1\u661f\u904b\u52d5\u306e\u554f\u984c\u306e\u89e3\u304d\u65b9<\/a><\/li><li><a href=\"#i-2\"><span class=\"toc_number toc_depth_1\">2<\/span> \u6955\u5186\u306b\u3064\u3044\u3066<\/a><\/li><\/ul><\/div>\n<h2 class=\"wp-block-heading\"><span id=\"i\">\u60d1\u661f\u904b\u52d5\u306e\u554f\u984c\u306e\u89e3\u304d\u65b9<\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u57fa\u672c\u65b9\u91dd<\/h3>\n\n\n\n<p>\u6ce8\u76ee\u3059\u308b\u60d1\u661f\u306e\u8ecc\u9053\u304c\u5186\u304b\u6955\u5186\u304b\u3067\u65b9\u91dd\u304c\u5927\u304d\u304f\u7570\u306a\u308a\u307e\u3059\u3002\u57fa\u672c\u7684\u306a\u554f\u984c\u306f\u4ee5\u4e0b\u306e\u65b9\u91dd\u3067\u89e3\u304d\u9032\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-st-blocks-my-box st-mybox has-title post-hashiro-point\" style=\"background-color:#fff;border-color:#ff7f50\"><p class=\"st-mybox-title\" style=\"color:#ff7f50;font-weight:bold;text-shadow:#fff 3px 0px 0px, #fff 2.83487px .981584px 0px, #fff 2.35766px 1.85511px 0px, #fff 1.62091px 2.52441px 0px, #fff .705713px 2.91581px 0px, #fff -0.287171px 2.98622px 0px, #fff -1.24844px 2.72789px 0px, #fff -2.07227px 2.16926px 0px, #fff -2.66798px 1.37182px 0px, #fff -2.96998px .42336px 0px, #fff -2.94502px -0.571704px 0px, #fff -2.59586px -1.50383px 0px, #fff -1.96093px -2.27041px 0px, #fff -1.11013px -2.78704px 0px, #fff -0.137119px -2.99686px 0px, #fff .850987px -2.87677px 0px, #fff 1.74541px -2.43999px 0px, #fff 2.44769px -1.73459px 0px, #fff 2.88051px -0.838246px 0px;background:linear-gradient(0deg, #fff 0%, #fff 55%, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0) 100%)\"><i class=\"st-fa st-svg-lightbulb-o st-css-no\" aria-hidden=\"\"><\/i>\u60d1\u661f\u904b\u52d5\u306e\u554f\u984c\u306e\u89e3\u304d\u65b9<\/p><div class=\"st-in-mybox\">\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"is-style-st-heading-custom-count post-hashiro-countA wp-block-heading\">\u5186\u8ecc\u9053\u306e\u5834\u5408<\/h3>\n\n\n\n<p>\u5411\u5fc3\u65b9\u5411\u306e\u904b\u52d5\u65b9\u7a0b\u5f0f\u3092\u7acb\u5f0f\u3059\u308b\u3002\u5468\u671f\u306f\uff0c$T=\\bun{2\\pi r}{v}$ \u3067\u6c42\u3081\u308b\u3002<\/p>\n\n\n\n<h3 class=\"is-style-st-heading-custom-count post-hashiro-countA wp-block-heading\">\u6955\u5186\u8ecc\u9053\u306e\u5834\u5408<\/h3>\n\n\n\n<p>\u8fd1\u65e5\u70b9\u3068\u9060\u65e5\u70b9\u3067\uff0c\u30b1\u30d7\u30e9\u30fc\u306e\u7b2c\u4e8c\u6cd5\u5247\u3068\u529b\u5b66\u7684\u30a8\u30cd\u30eb\u30ae\u30fc\u4fdd\u5b58\u5247\u3092\u7acb\u5f0f\u3059\u308b\u3002<\/p>\n\n\n\n<p>\u5468\u671f\u306f\u30b1\u30d7\u30e9\u30fc\u306e\u7b2c\u4e09\u6cd5\u5247\u3092\u7528\u3044\u3066\u6c42\u3081\u308b\u3002\u6bd4\u8f03\u3059\u308b\u60d1\u661f\u304c\u306a\u3044\u5834\u5408\u306f\uff0c\u6955\u5186\u306e\u9762\u7a4d\u3092\u9762\u7a4d\u901f\u5ea6\u3067\u5272\u308b\u3053\u3068\u3067\u5468\u671f\u3092\u6c42\u3081\u308b\u3002<\/p>\n<\/div><\/div>\n\n\n\n<p>\u306a\u304b\u306a\u304b\u30a4\u30e1\u30fc\u30b8\u3057\u3065\u3089\u3044\u3068\u601d\u3044\u307e\u3059\u306e\u3067\uff0c\u4f8b\u984c\u3092\u901a\u3058\u3066\u89e3\u304d\u65b9\u3092\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div class=\"wp-block-st-blocks-midashi-box freebox has-title post-hashiro-reidai\" style=\"background-color:#f7f7fb;border-width:3px;border-color:#a3bded\"><p class=\"p-free\" style=\"border-color:#a3bded;font-weight:bold\"><span class=\"p-entry-f\" style=\"color:#ffffff;font-weight:bold;background-color:#a3bded\"><i class=\"st-fa st-svg-pencil st-css-no\" aria-hidden=\"\"><\/i>\u4f8b\u984c<\/span><\/p><div class=\"free-inbox\">\n<p>\u592a\u967d\u306e\u4e2d\u5fc3\u3092\u7126\u70b9\u306e1\u3064\u3068\u3057\u3066\uff0c\u5730\u7403\u306f\u516c\u8ee2\u3057\u3066\u3044\u308b\u3002\u592a\u967d\u304b\u3089\u8fd1\u65e5\u70b9\uff0c\u9060\u65e5\u70b9\u307e\u3067\u306e\u8ddd\u96e2\u3092\u305d\u308c\u305e\u308c $r_1,\\,r_2$ \u3068\u3059\u308b\u3002\u592a\u967d\u306e\u8cea\u91cf\u3092 $M$\uff0c\u4e07\u6709\u5f15\u529b\u5b9a\u6570\u3092 $G$ \u3068\u3057\u3066\uff0c\u4ee5\u4e0b\u306e\u8a2d\u554f\u306b\u7b54\u3048\u3088\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"195\" height=\"117\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u7269\u7406563.svg\" alt=\"\" class=\"wp-image-4621\"\/><noscript><img decoding=\"async\" width=\"195\" height=\"117\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u7269\u7406563.svg\" alt=\"\" class=\"wp-image-4621\"\/><\/noscript><\/figure>\n\n\n\n<p class=\"setumonnkakko\">\u8fd1\u65e5\u70b9\u304a\u3088\u3073\u9060\u65e5\u70b9\u306b\u304a\u3051\u308b\u5730\u7403\u306e\u901f\u3055 $v_1,\\,v_2$ \u3092\u305d\u308c\u305e\u308c\u6c42\u3081\u3088\u3002<\/p>\n\n\n\n<p class=\"setumonnkakko\">\u5730\u7403\u306e\u516c\u8ee2\u5468\u671f$T$ \u3092\u6c42\u3081\u3088\u3002\u305f\u3060\u3057\uff0c\u6955\u5186\u306e\u9762\u7a4d\u304c $S=\\Bun{\\pi(r_1+r_2)\\sqrt{r_1r_2}}{2}$ \u3067\u4e0e\u3048\u3089\u308c\u308b\u3053\u3068\u3092\u5229\u7528\u3057\u3066\u3088\u3044\u3002<\/p>\n<\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">(1) \u306e\u89e3\u304d\u65b9<\/h3>\n\n\n\n<p>\u60d1\u661f\u304c\u6955\u5186\u8ecc\u9053\u3092\u63cf\u3044\u3066\u904b\u52d5\u3057\u3066\u3044\u307e\u3059\u306e\u3067\uff0c\u9762\u7a4d\u901f\u5ea6\u4fdd\u5b58\u5247\u3068\u529b\u5b66\u7684\u30a8\u30cd\u30eb\u30ae\u30fc\u4fdd\u5b58\u5247\u306e\u9023\u7acb\u3068\u3044\u3046\u5b9a\u77f3\u901a\u308a\u306e\u89e3\u6cd5\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"174\" height=\"93\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u7269\u7406564.svg\" alt=\"\" class=\"wp-image-4622\" title=\"\"\/><noscript><img decoding=\"async\" width=\"174\" height=\"93\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u7269\u7406564.svg\" alt=\"\" class=\"wp-image-4622\" title=\"\"\/><\/noscript><\/figure>\n\n\n\n<p>\u9762\u7a4d\u901f\u5ea6\u306b\u3064\u3044\u3066\u306f\uff0c\u56f3\u306e\u3088\u3046\u306b\u300c\u592a\u967d\u3068\u60d1\u661f\u3092\u7d50\u3076\u76f4\u7dda\uff08\u52d5\u5f84\uff09\u3068\uff0c\u901f\u5ea6\u30d9\u30af\u30c8\u30eb\u304c\u4f5c\u308b\u4e09\u89d2\u5f62\u300d\u3092\u304b\u3044\u3066\u8003\u3048\u308b\u3068\u308f\u304b\u308a\u3084\u3059\u3044\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u8fd1\u65e5\u70b9\u306e\u9762\u7a4d\u901f\u5ea6\u306f $\\bun12r_1v_1$\uff0c\u9060\u65e5\u70b9\u306e\u9762\u7a4d\u901f\u5ea6\u306f $\\bun12r_2v_2$ \u3067\u3059\u306e\u3067\uff0c\u9762\u7a4d\u901f\u5ea6\u4fdd\u5b58\u5247\u3088\u308a\uff0c<\/p>\n\n\n\n<p>$$\\Bun12r_1v_1=\\bun12r_2v_2$$\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u529b\u5b66\u7684\u30a8\u30cd\u30eb\u30ae\u30fc\u4fdd\u5b58\u5247\u306b\u3064\u3044\u3066\u3082\uff0c\u8fd1\u65e5\u70b9\u3068\u9060\u65e5\u70b9\u3067\uff0c<\/p>\n\n\n\n<p>$$\\Bun12mv_1\\!^2-G\\bun{mM}{r_1}=\\bun12mv_2\\!^2-G\\bun{mM}{r_2}$$\u3068\u7acb\u5f0f\u3067\u304d\u307e\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u30892\u5f0f\u3092\u9023\u7acb\u3059\u308b\u3053\u3068\u3067\uff0c<br>$$v_1=\\sqrt{\\bun{2GMr_2}{r_1(r_1+r_2)}},\\ v_2=\\sqrt{\\bun{2GMr_1}{r_2(r_1+r_2)}}$$\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-st-blocks-my-box st-mybox has-title post-hashiro-normalbox\" style=\"background-color:#fff;border-color:#777777\"><p class=\"st-mybox-title\" style=\"color:#777777;font-weight:bold;text-shadow:#fff 3px 0px 0px, #fff 2.83487px .981584px 0px, #fff 2.35766px 1.85511px 0px, #fff 1.62091px 2.52441px 0px, #fff .705713px 2.91581px 0px, #fff -0.287171px 2.98622px 0px, #fff -1.24844px 2.72789px 0px, #fff -2.07227px 2.16926px 0px, #fff -2.66798px 1.37182px 0px, #fff -2.96998px .42336px 0px, #fff -2.94502px -0.571704px 0px, #fff -2.59586px -1.50383px 0px, #fff -1.96093px -2.27041px 0px, #fff -1.11013px -2.78704px 0px, #fff -0.137119px -2.99686px 0px, #fff .850987px -2.87677px 0px, #fff 1.74541px -2.43999px 0px, #fff 2.44769px -1.73459px 0px, #fff 2.88051px -0.838246px 0px;background:linear-gradient(0deg, #fff 0%, #fff 55%, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0) 100%)\"><i class=\"st-fa st-svg-check-circle st-css-no\" aria-hidden=\"\"><\/i>\u7b54\u3048\u306e\u78ba\u8a8d<\/p><div class=\"st-in-mybox\">\n<p>\u7acb\u5f0f\u3057\u3066\u3044\u308b\u9762\u7a4d\u901f\u5ea6\u4fdd\u5b58\u5247\u3068\u529b\u5b66\u7684\u30a8\u30cd\u30eb\u30ae\u30fc\u4fdd\u5b58\u5247\u306b\u5bfe\u79f0\u6027\u304c\u3042\u308b\u305f\u3081\uff0c$v_1$ \u306e $r_1$ \u3092 $r_2$ \u306b\uff0c$r_2$ \u3092 $r_1$ \u306b\u5909\u3048\u305f\u3068\u304d\u306b $v_2$ \u3068\u306a\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3067\u304d\u308b\u3068\u8a08\u7b97\u30df\u30b9\u3092\u6e1b\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">(2) \u306e\u89e3\u304d\u65b9<\/h3>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u9762\u7a4d\u901f\u5ea6\u304c\u300c\u60d1\u661f\u3068\u592a\u967d\u3092\u7d50\u3076\u7dda\u5206\u304c\u5358\u4f4d\u6642\u9593\u3042\u305f\u308a\u306b\u6383\u304f\u9762\u7a4d\u300d\u3060\u3063\u305f\u3053\u3068\u3092\u601d\u3044\u51fa\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<p>\u6955\u5186\u306e\u9762\u7a4d\u304c\u5358\u4f4d\u6642\u9593\u3042\u305f\u308a\u306b\u9762\u7a4d\u901f\u5ea6\u305a\u3064\u5857\u308a\u3064\u3076\u3055\u308c\u3066\u3044\u304f\u308f\u3051\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p>\u6955\u5186\u3092\u5168\u3066\u5857\u308a\u7d42\u3048\u308b\u3068\u3061\u3087\u3046\u3069\u5730\u7403\u304c\u516c\u8ee2\u3092\u7d42\u3048\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u306e\u3067\uff0c\u6955\u5186\u306e\u9762\u7a4d\u3092\u9762\u7a4d\u901f\u5ea6\u3067\u5272\u308b\u3053\u3068\u3067\u5468\u671f\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3088\u3063\u3066\u6c42\u3081\u308b\u5468\u671f\u306f\uff0c<\/p>\n\n\n\n<p>$$T=\\bun{S}{\\bun12r_1v_1}=\\bun{\\pi(r_1+r_2)}{\\sqrt{2GM}}$$\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>$\\bun{S}{\\bun12r_2v_2}$ \u3067\u8a08\u7b97\u3057\u3066\u3082\u5f53\u7136\u540c\u3058\u7d50\u679c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"i-2\">\u6955\u5186\u306b\u3064\u3044\u3066<\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u9762\u7a4d\u306e\u8a08\u7b97<\/h3>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon1 clearfix\"><div class=\"st-kaiwa-face\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u5b8c\u6210\u30a2\u30a4\u30b3\u30f3.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name\">\u7fbd\u767d<\/div><\/div><div class=\"st-kaiwa-area\"><div class=\"st-kaiwa-hukidashi\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u4e0a\u306e\u4f8b\u984c\u3067\u306f\u6955\u5186\u306e\u9762\u7a4d\u304c\u4e0e\u3048\u3089\u308c\u3066\u3044\u307e\u3057\u305f\u304c\uff0c\u81ea\u529b\u3067\u6c42\u3081\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u306e\u3067\u624b\u9806\u3092\u7406\u89e3\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-st-blocks-memo clip-memobox has-icon-label post-hashiro-tyuu\" style=\"color:#808080;background-color:#f5f5f5\"><div class=\"clip-fonticon\" style=\"color:#919191;border-color:#9191914d\"><i class=\"st-fa st-svg-exclamation-circle st-css-no\" data-icon-label=\"\u6ce8\" aria-hidden=\"\"><\/i><\/div><div class=\"clip-memotext\" style=\"color:#808080\">\n<p class=\"has-st-icon has-st-icon-exclamation-circle\">\u3053\u3053\u304b\u3089\u5148\u306f\u5b8c\u5168\u306b\u6570\u5b66\u306e\u5185\u5bb9\u3067\u3042\u308a\uff0c\u300c\u6955\u5186\u306e\u9762\u7a4d\u304f\u3089\u3044\u6c42\u3081\u3089\u308c\u308b\u308f\uff01\u300d\u3068\u3044\u3046\u4eba\u306f\u8aad\u307f\u98db\u3070\u3057\u3066\u69cb\u308f\u306a\u3044\u3002<\/p>\n<\/div><\/div>\n\n\n\n<p>\u307e\u305a\uff0c\u6955\u5186\u3068\u306f\u300c\u5e73\u9762\u4e0a\u306e\u3042\u308b2\u70b9\u304b\u3089\u306e\u8ddd\u96e2\u304c\u4e00\u5b9a\u306e\u70b9\u306e\u96c6\u5408\u300d\u3067\u3059\u3002\u3053\u306e2\u70b9\u304c\u7126\u70b9\u3068\u547c\u3070\u308c\u3066\u3044\u3066\uff0c\u305d\u306e\u3046\u3061\u7247\u65b9\u306e\u70b9\u306b\u592a\u967d\u304c\u5b58\u5728\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7269\u7406\u3067\u306f\uff0c\u8fd1\u65e5\u70b9\u8ddd\u96e2 $r_1$ \u3068\u9060\u65e5\u70b9\u8ddd\u96e2 $r_2$ \u304c\u4e0e\u3048\u3089\u308c\u307e\u3059\u3002\u4e00\u65b9\uff0c\u6955\u5186\u306e\u9577\u534a\u5f84 $a$\uff0c\u77ed\u534a\u5f84 $b$ \u3092\u7528\u3044\u3066\uff0c\u6955\u5186\u306e\u9762\u7a4d\u306f $\\pi ab$ \u3068\u8868\u3055\u308c\u308b\u3053\u3068\u304c\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3088\u3063\u3066\uff0c\u7269\u7406\u3067\u306f\u4ee5\u4e0b\u3092\u81ea\u529b\u3067\u8a08\u7b97\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u76ee\u6a19\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-st-blocks-my-box st-mybox has-title post-hashiro-normalbox\" style=\"background-color:#fff;border-color:#777777\"><p class=\"st-mybox-title\" style=\"color:#777777;font-weight:bold;text-shadow:#fff 3px 0px 0px, #fff 2.83487px .981584px 0px, #fff 2.35766px 1.85511px 0px, #fff 1.62091px 2.52441px 0px, #fff .705713px 2.91581px 0px, #fff -0.287171px 2.98622px 0px, #fff -1.24844px 2.72789px 0px, #fff -2.07227px 2.16926px 0px, #fff -2.66798px 1.37182px 0px, #fff -2.96998px .42336px 0px, #fff -2.94502px -0.571704px 0px, #fff -2.59586px -1.50383px 0px, #fff -1.96093px -2.27041px 0px, #fff -1.11013px -2.78704px 0px, #fff -0.137119px -2.99686px 0px, #fff .850987px -2.87677px 0px, #fff 1.74541px -2.43999px 0px, #fff 2.44769px -1.73459px 0px, #fff 2.88051px -0.838246px 0px;background:linear-gradient(0deg, #fff 0%, #fff 55%, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0) 100%)\"><i class=\"st-fa st-svg-check-circle st-css-no\" aria-hidden=\"\"><\/i>\u76ee\u6a19<\/p><div class=\"st-in-mybox\">\n<p>\u8fd1\u65e5\u70b9\u8ddd\u96e2 $r_1$\uff0c\u9060\u65e5\u70b9\u8ddd\u96e2 $r_2$ \u3092\u7528\u3044\u3066\uff0c\u6955\u5186\u306e\u9762\u7a4d $\\pi ab$ \u3092\u6c42\u3081\u308b\u3002<\/p>\n<\/div><\/div>\n\n\n\n<p>\u9577\u534a\u5f84 $a$\uff0c\u77ed\u534a\u5f84 $b$ \u306b\u3064\u3044\u3066\u305d\u308c\u305e\u308c\u8003\u3048\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9577\u534a\u5f84 $a$ \u306b\u3064\u3044\u3066<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"175\" height=\"105\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u7269\u7406565.svg\" alt=\"\" class=\"wp-image-4623\"\/><noscript><img decoding=\"async\" width=\"175\" height=\"105\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u7269\u7406565.svg\" alt=\"\" class=\"wp-image-4623\"\/><\/noscript><\/figure>\n\n\n\n<p>\u53f3\u56f3\u304b\u3089\uff0c$r_1+r_2$ \u3068 $2a$ \u304c\u7b49\u3057\u3044\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u3088\u3063\u3066\uff0c<br>$$a=\\bun{r_1+r_2}{2}$$\u3068\u3057\u3066\u9577\u534a\u5f84 $a$ \u304c\u6c42\u307e\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u77ed\u534a\u5f84 $b$ \u306b\u3064\u3044\u3066<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"197\" height=\"105\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u7269\u7406566.svg\" alt=\"\" class=\"wp-image-4624\"\/><noscript><img decoding=\"async\" width=\"197\" height=\"105\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u7269\u7406566.svg\" alt=\"\" class=\"wp-image-4624\"\/><\/noscript><\/figure>\n\n\n\n<p>\u307e\u305a\uff0c\u56f3\u306e$\\rmA$\u70b9\u306b\u3064\u3044\u3066\u8003\u3048\u307e\u3059\u30022\u7126\u70b9\u304b\u3089$\\rmA$\u70b9\u307e\u3067\u306e\u8ddd\u96e2\u306e\u548c\u306f\uff0c$\\rmA\\rmF+\\rmA\\rmF\\mskip 1mu\\prime $ \u3067\u3059\u304c\uff0c$\\rmA\\rmF=\\rmF\\mskip 1mu\\prime \\rmA\\mskip 1mu\\prime $ \u3067\u3042\u308b\u305f\u3081\uff0c<\/p>\n\n\n\n<p>$$\\rmA\\rmF+\\rmA\\rmF\\mskip 1mu\\prime =\\rmF\\mskip 1mu\\prime \\rmA\\mskip 1mu\\prime +\\rmA\\rmF\\mskip 1mu\\prime =\\rmA\\rmA\\mskip 1mu\\prime =r_1+r_2$$\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large physicsimg\"><img decoding=\"async\" width=\"197\" height=\"115\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u7269\u7406567.svg\" alt=\"\" class=\"wp-image-4625\"\/><noscript><img decoding=\"async\" width=\"197\" height=\"115\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u7269\u7406567.svg\" alt=\"\" class=\"wp-image-4625\"\/><\/noscript><\/figure>\n\n\n\n<p>\u3053\u306e\u8ddd\u96e2\u306f $\\rmB\\rmF+\\rmB\\rmF\\mskip 1mu\\prime $ \u3067\u3082\u7b49\u3057\u304f\u306a\u308a\u307e\u3059\u304c\uff0c$\\rmB\\rmF=\\rmB\\rmF\\mskip 1mu\\prime $ \u3067\u3059\u306e\u3067\uff0c<\/p>\n\n\n\n<p>$$\\rmB\\rmF=\\bun{r_1+r_2}{2}$$\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u7d9a\u3044\u3066\uff0c$\\rmF\\rmO$ \u3067\u3059\u304c\uff0c\u5bfe\u79f0\u6027\u304b\u3089\u660e\u3089\u304b\u306b $\\rmF\\rmO=\\rmO\\rmF\\mskip 1mu\\prime =\\bun{FF\\mskip 1mu\\prime }{2}$ \u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p>$$\\begin{aligned}\\rmF\\rmF\\mskip 1mu\\prime &amp;=\\rmA\\rmA\\mskip 1mu\\prime -\\rmA\\rmF-\\rmF\\mskip 1mu\\prime \\rmA\\mskip 1mu\\prime \\\\&amp;=\\rmA\\rmA\\mskip 1mu\\prime -2\\rmA\\rmF\\\\&amp;=2a-2r_1\\\\&amp;=r_2-r_1\\end{aligned}$$\u304c\u6210\u308a\u7acb\u3064\u306e\u3067\uff0c$\\rmF\\rmO=\\bun{r_2-r_1}{2}$ \u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>\u76f4\u89d2\u4e09\u89d2\u5f62$\\rmF\\rmB\\rmO$\u3067\u4e09\u5e73\u65b9\u306e\u5b9a\u7406\u3092\u7528\u3044\u308b\u3053\u3068\u3067\uff0c<br>$$\\begin{aligned} \\rmF\\rmB^2=\\rmF\\rmO^2+\\rmB\\rmO^2&amp;\\Leftrightarrow \\left(\\bun{r_1+r_2}{2}\\right)^2=\\left(\\bun{r_2-r_1}{2}\\right)^2+b^2 \\end{aligned}$$\u3068\u7acb\u5f0f\u3067\u304d\u308b\u305f\u3081\uff0c\u3053\u308c\u3092\u6574\u7406\u3059\u308b\u3053\u3068\u3067\uff0c<br>$$b=\\sqrt{r_1r_2}$$\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9762\u7a4d\u306e\u8a08\u7b97<\/h3>\n\n\n\n<p>\u4ee5\u4e0a\u304b\u3089\uff0c$a=\\bun{r_1+r_2}{2}$\uff0c$b=\\sqrt{r_1r_2}$ \u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u306e\u3067\uff0c\u6955\u5186\u306e\u9762\u7a4d\u306f\uff0c<\/p>\n\n\n\n<p>$$\\pi ab=\\Bun{\\pi(r_1+r_2)\\sqrt{r_1r_2}}{2}$$\u3068\u3057\u3066\u6c42\u307e\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"st-kaiwa-box kaiwaicon4 clearfix\"><div class=\"st-kaiwa-area2\"><div class=\"st-kaiwa-hukidashi2\"><div class=\"wp-block-st-blocks-st-kaiwa\">\n<p>\u601d\u3044\u306e\u5916\uff0c\u5927\u5909\u3067\u3059\u3088\u306d\u3002\u30b9\u30e0\u30fc\u30ba\u306b\u8a08\u7b97\u3067\u304d\u308b\u3088\u3046\u306b\u624b\u3092\u52d5\u304b\u3057\u3066\u7df4\u7fd2\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\uff01<\/p>\n<\/div><\/div><\/div><div class=\"st-kaiwa-face2\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u751f\u5f92\uff08\u5b66\u7fd2\uff09.png\" width=\"60px\"><noscript><img decoding=\"async\" src=\"https:\/\/torisetudy.com\/wp-content\/uploads\/2022\/07\/\u751f\u5f92\uff08\u5b66\u7fd2\uff09.png\" width=\"60px\"><\/noscript><div class=\"st-kaiwa-face-name2\">\u751f\u5f92<\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u6b211 \u60d1\u661f\u904b\u52d5\u306e\u554f\u984c\u306e\u89e3\u304d\u65b92 \u6955\u5186\u306b\u3064\u3044\u3066 \u60d1\u661f\u904b\u52d5\u306e\u554f\u984c\u306e\u89e3\u304d\u65b9 \u57fa\u672c\u65b9\u91dd \u6ce8\u76ee\u3059\u308b\u60d1\u661f\u306e\u8ecc\u9053\u304c\u5186\u304b\u6955\u5186\u304b\u3067\u65b9\u91dd\u304c\u5927\u304d\u304f\u7570\u306a\u308a\u307e\u3059\u3002\u57fa\u672c\u7684\u306a\u554f\u984c\u306f\u4ee5\u4e0b\u306e\u65b9\u91dd\u3067\u89e3\u304d\u9032\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u306a\u304b\u306a\u304b &#8230; <\/p>\n","protected":false},"author":1,"featured_media":4745,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,39],"tags":[],"class_list":["post-4748","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dynamics","category-39"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/posts\/4748"}],"collection":[{"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4748"}],"version-history":[{"count":14,"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/posts\/4748\/revisions"}],"predecessor-version":[{"id":4762,"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/posts\/4748\/revisions\/4762"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=\/wp\/v2\/media\/4745"}],"wp:attachment":[{"href":"https:\/\/torisetudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4748"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4748"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/torisetudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}