{"id":14155,"date":"2025-05-02T04:58:24","date_gmt":"2025-05-02T04:58:24","guid":{"rendered":"https:\/\/www.fizika-online.ru\/?page_id=14155"},"modified":"2025-05-02T06:23:32","modified_gmt":"2025-05-02T06:23:32","slug":"%d0%b7%d0%b0%d0%b4%d0%b0%d1%87%d0%b8-%d0%bf%d0%be-%d1%81%d1%82%d0%b0%d1%82%d0%b8%d0%ba%d0%b5-%d0%b8-%d0%b3%d0%b8%d0%b4%d1%80%d0%be%d1%81%d1%82%d0%b0%d1%82%d0%b8%d0%ba%d0%b5-%d0%b7%d0%b0%d0%b4-118","status":"publish","type":"page","link":"https:\/\/www.fizika-online.ru\/?page_id=14155","title":{"rendered":"\u0417\u0430\u0434\u0430\u0447\u0438 \u043f\u043e \u0441\u0442\u0430\u0442\u0438\u043a\u0435 \u0438 \u0433\u0438\u0434\u0440\u043e\u0441\u0442\u0430\u0442\u0438\u043a\u0435. \u0417\u0430\u0434\u0430\u0447\u0430 \u0421\u0442\u0413\u0421\u0442118"},"content":{"rendered":"<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><em><strong>\u0417\u0430\u0434\u0430\u0447\u0430<\/strong><\/em>.\u00a0\u0421\u0442\u0435\u0440\u0436\u0435\u043d\u044c \u043c\u0430\u0441\u0441\u043e\u0439 $M=4$ \u043a\u0433 \u0441\u043e\u0433\u043d\u0443\u043b\u0438 \u043f\u043e\u0441\u0435\u0440\u0435\u0434\u0438\u043d\u0435 \u0438 \u043f\u043e\u0434\u0432\u0435\u0441\u0438\u043b\u0438 \u043d\u0430 \u043d\u0438\u0442\u0438, \u043f\u0440\u0438\u0432\u044f\u0437\u0430\u043d\u043d\u043e\u0439 \u043a \u043e\u0434\u043d\u043e\u043c\u0443 \u0438\u0437 \u0435\u0433\u043e \u043a\u043e\u043d\u0446\u043e\u0432 (\u0441\u043c. \u0440\u0438\u0441.). \u041d\u0430\u0439\u0434\u0438\u0442\u0435 \u043c\u0430\u0441\u0441\u0443 \u0433\u0440\u0443\u0437\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u043f\u0440\u0438\u043a\u0440\u0435\u043f\u0438\u0442\u044c \u043a \u0434\u0440\u0443\u0433\u043e\u043c\u0443 \u043a\u043e\u043d\u0446\u0443 \u0441\u0442\u0435\u0440\u0436\u043d\u044f, \u0447\u0442\u043e\u0431\u044b \u0441\u0435\u0440\u0435\u0434\u0438\u043d\u0430 \u043d\u0438\u0436\u043d\u0435\u0439 \u043f\u043e\u043b\u043e\u0432\u0438\u043d\u044b \u0441\u0442\u0435\u0440\u0436\u043d\u044f \u043e\u043a\u0430\u0437\u0430\u043b\u0430\u0441\u044c \u043d\u0430 \u043e\u0434\u043d\u043e\u0439 \u0432\u0435\u0440\u0442\u0438\u043a\u0430\u043b\u0438 \u0441 \u0442\u043e\u0447\u043a\u043e\u0439 \u043f\u043e\u0434\u0432\u0435\u0441\u0430.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-14156\" src=\"https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/05\/2-1.jpg\" alt=\"\" width=\"182\" height=\"232\" srcset=\"https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/05\/2-1.jpg 272w, https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/05\/2-1-235x300.jpg 235w\" sizes=\"(max-width: 182px) 100vw, 182px\" \/><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt;\"><span style=\"color: #000000;\"><em><strong>\u0420\u0435\u0448\u0435\u043d\u0438\u0435. <\/strong><\/em>\u041f\u0440\u0438 \u0440\u0435\u0448\u0435\u043d\u0438\u0438 \u0437\u0430\u0434\u0430\u0447\u0438 \u0431\u0443\u0434\u0435\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f <a href=\"https:\/\/www.fizika-online.ru\/?page_id=2478\" target=\"_blank\" rel=\"noopener\">\u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u043c \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u0437\u0430\u0434\u0430\u0447 \u043f\u043e \u0441\u0442\u0430\u0442\u0438\u043a\u0435<\/a>.<\/span><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">1. \u0412\u044b\u0431\u0435\u0440\u0435\u043c \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u043e\u0442\u0441\u0447\u0435\u0442\u0430 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0443\u044e \u0441 \u043f\u043e\u043b\u043e\u043c, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043e\u0447\u0435\u0432\u0438\u0434\u043d\u043e \u043d\u0435\u043f\u043e\u0434\u0432\u0438\u0436\u0435\u043d \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0437\u0435\u043c\u043b\u0438, \u0430 \u0437\u043d\u0430\u0447\u0438\u0442 \u0442\u0430\u043a\u0430\u044f \u0421\u041e \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0438\u043d\u0435\u0440\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0439.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">2. \u0418\u0437\u043e\u0431\u0440\u0430\u0437\u0438\u043c \u0432\u0441\u0435 \u0441\u0438\u043b\u044b, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043d\u0430 \u0442\u0435\u043b\u043e. \u0421\u0430\u043c \u0441\u0442\u0435\u0440\u0436\u0435\u043d\u044c \u0440\u0430\u0437\u043e\u0431\u044c\u0435\u043c \u043d\u0430 \u0434\u0432\u0435 \u0447\u0430\u0441\u0442\u0438, \u043d\u0430 \u043a\u0430\u0436\u0434\u0443\u044e \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0431\u0443\u0434\u0435\u0442 \u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u0442\u044c \u0441\u0438\u043b\u0430 \u0442\u044f\u0436\u0435\u0441\u0442\u0438 $\\frac{Mg}{2}$.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-14158\" src=\"https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/05\/2-3.jpg\" alt=\"\" width=\"273\" height=\"488\" srcset=\"https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/05\/2-3.jpg 273w, https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/05\/2-3-168x300.jpg 168w\" sizes=\"(max-width: 273px) 100vw, 273px\" \/><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">3. \u0417\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u0442\u044c \u043f\u0435\u0440\u0432\u043e\u0435 \u0443\u0441\u043b\u043e\u0432\u0438\u0435 \u0440\u0430\u0432\u043d\u043e\u0432\u0435\u0441\u0438\u044f \u043d\u0435 \u0431\u0443\u0434\u0435\u043c, \u0442.\u043a. \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u0443\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0439 \u0432\u043e\u0439\u0434\u0435\u0442 \u0441\u0438\u043b\u0430 \u0440\u0435\u0430\u043a\u0446\u0438\u0438, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043d\u0430\u0441 \u0432\u043e\u0432\u0441\u0435 \u043d\u0435 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u0443\u0435\u0442.<\/span><\/p>\n<div id=\"yandex_rtb_R-A-1598022-3\"><\/div>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><script>window.yaContextCb.push(()=>{\n\tYa.Context.AdvManager.render({\n\t\t\"blockId\": \"R-A-1598022-3\",\n\t\t\"renderTo\": \"yandex_rtb_R-A-1598022-3\"\n\t})\n})\n<\/script><\/span><br \/>\n<span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">4. \u0412\u044b\u0431\u0435\u0440\u0435\u043c \u043e\u0441\u044c \u0432\u0440\u0430\u0449\u0435\u043d\u0438\u044f. \u0420\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u0440\u0430\u0432\u043d\u043e\u0432\u0435\u0441\u0438\u0435 \u0441\u0442\u0435\u0440\u0436\u043d\u044f \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043e\u0441\u0438, \u043f\u0440\u043e\u0445\u043e\u0434\u044f\u0449\u0435\u0439 \u0447\u0435\u0440\u0435\u0437 \u0442\u043e\u0447\u043a\u0443 \u0435\u0433\u043e \u043f\u043e\u0434\u0432\u0435\u0441\u0430, \u044d\u0442\u043e \u0434\u0430\u0435\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c &#171;\u043e\u0431\u043d\u0443\u043b\u0438\u0442\u044c&#187; \u043c\u043e\u043c\u0435\u043d\u0442\u044b \u0441\u0438\u043b\u044b \u0440\u0435\u0430\u043a\u0446\u0438\u0438 $N$ \u0438 \u0441\u0438\u043b\u044b \u0442\u044f\u0436\u0435\u0441\u0442\u0438, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0439 \u043d\u0430 \u043d\u0438\u0436\u043d\u044e\u044e \u0447\u0430\u0441\u0442\u044c \u0441\u0442\u0435\u0440\u0436\u043d\u044f, \u0442.\u043a. \u043f\u043e \u0443\u0441\u043b\u043e\u0432\u0438\u044e \u0441\u0435\u0440\u0435\u0434\u0438\u043d\u0430 \u043d\u0438\u0436\u043d\u0435\u0439 \u043f\u043e\u043b\u043e\u0432\u0438\u043d\u044b \u0441\u0442\u0435\u0440\u0436\u043d\u044f \u043e\u043a\u0430\u0437\u0430\u043b\u0430\u0441\u044c \u043d\u0430 \u043e\u0434\u043d\u043e\u0439 \u0432\u0435\u0440\u0442\u0438\u043a\u0430\u043b\u0438 \u0441 \u0442\u043e\u0447\u043a\u043e\u0439 \u043f\u043e\u0434\u0432\u0435\u0441\u0430.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">5. \u041d\u0430\u0439\u0434\u0435\u043c \u043f\u043b\u0435\u0447\u0438 \u0441\u0438\u043b, \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0432\u044b\u0431\u0440\u0430\u043d\u043d\u043e\u0439 \u043e\u0441\u0438. \u0420\u0430\u043d\u0435\u0435 \u043c\u044b \u0438\u0445 \u0443\u0436\u0435 \u043f\u043e\u043a\u0430\u0437\u0430\u043b\u0438 \u043d\u0430 \u0440\u0438\u0441\u0443\u043d\u043a\u0435. \u0418\u0442\u0430\u043a<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$\\frac{l_1}{\\frac{l}{2}}=cos\\,\\alpha\\Rightarrow l_1=\\frac{l}{2}\\,cos\\,\\alpha$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$\\frac{l_2}{\\frac{l}{2}}=sin\\,\\alpha\\Rightarrow l_2=\\frac{l}{2}\\,sin\\,\\alpha$.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">\u0417\u0430\u043f\u0438\u0448\u0435\u043c \u0432\u0442\u043e\u0440\u043e\u0435 \u0443\u0441\u043b\u043e\u0432\u0438\u0435 \u0440\u0430\u0432\u043d\u043e\u0432\u0435\u0441\u0438\u044f (\u043f\u0440\u0430\u0432\u0438\u043b\u043e \u043c\u043e\u043c\u0435\u043d\u0442\u043e\u0432), \u0443\u0447\u0438\u0442\u044b\u0432\u0430\u044f \u043a\u0443\u0434\u0430 \u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u043a\u0430\u0436\u0434\u0430\u044f \u0441\u0438\u043b\u0430 \u0441\u0442\u0435\u0440\u0436\u0435\u043d\u044c, \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0432\u044b\u0431\u0440\u0430\u043d\u043d\u043e\u0439 \u043e\u0441\u0438<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$mgl_2-\\frac{Mg}{2} \\cdot l_1=0$.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">6. \u041f\u043e\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u043f\u043b\u0435\u0447 \u0438 \u043d\u0430\u0445\u043e\u0434\u0438\u043c \u0438\u0441\u043a\u043e\u043c\u0443\u044e \u043c\u0430\u0441\u0441\u0443<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$mg \\cdot \\frac{l}{2}\\,sin\\,\\alpha-\\frac{Mg}{2} \\cdot \\frac{l}{2}\\,cos\\,\\alpha=0$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$m \\cdot sin\\,\\alpha-\\frac{M}{2} \\cdot cos\\,\\alpha=0$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$m \\cdot sin\\,\\alpha=\\frac{M}{2} \\cdot cos\\,\\alpha$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$m=\\frac{M}{2} \\cdot ctg\\,\\alpha$.<\/span><\/p>\n<p style=\"text-align: left;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">\u0427\u0442\u043e\u0431\u044b \u043d\u0430\u0439\u0442\u0438 \u043a\u043e\u0442\u0430\u043d\u0433\u0435\u043d\u0441 \u0443\u0433\u043b\u0430 $\\alpha$, \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u043f\u0440\u044f\u043c\u043e\u0443\u0433\u043e\u043b\u044c\u043d\u044b\u0439 \u0442\u0440\u0435\u0443\u0433\u043e\u043b\u044c\u043d\u0438\u043a $\\Delta OAB$<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$ctg\\,\\alpha=\\frac{AB}{OA}=\\frac{\\frac{l}{2}}{l}=\\frac{1}{2}$.<\/span><\/p>\n<p style=\"text-align: left;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">\u0418\u0441\u043a\u043e\u043c\u0430\u044f \u043c\u0430\u0441\u0441\u0430<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$m=\\frac{4}{2} \\cdot \\frac{1}{2}=1$ \u043a\u0433.<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><em><strong>\u041e\u0442\u0432\u0435\u0442: <\/strong><\/em>1 \u043a\u0433.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0417\u0430\u0434\u0430\u0447\u0430.\u00a0\u0421\u0442\u0435\u0440\u0436\u0435\u043d\u044c \u043c\u0430\u0441\u0441\u043e\u0439 $M=4$ \u043a\u0433 \u0441\u043e\u0433\u043d\u0443\u043b\u0438 \u043f\u043e\u0441\u0435\u0440\u0435\u0434\u0438\u043d\u0435 \u0438 \u043f\u043e\u0434\u0432\u0435\u0441\u0438\u043b\u0438 \u043d\u0430 \u043d\u0438\u0442\u0438, \u043f\u0440\u0438\u0432\u044f\u0437\u0430\u043d\u043d\u043e\u0439 \u043a \u043e\u0434\u043d\u043e\u043c\u0443 \u0438\u0437 \u0435\u0433\u043e \u043a\u043e\u043d\u0446\u043e\u0432 (\u0441\u043c. \u0440\u0438\u0441.). \u041d\u0430\u0439\u0434\u0438\u0442\u0435 \u043c\u0430\u0441\u0441\u0443 \u0433\u0440\u0443\u0437\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u043f\u0440\u0438\u043a\u0440\u0435\u043f\u0438\u0442\u044c \u043a \u0434\u0440\u0443\u0433\u043e\u043c\u0443 \u043a\u043e\u043d\u0446\u0443 \u0441\u0442\u0435\u0440\u0436\u043d\u044f, \u0447\u0442\u043e\u0431\u044b \u0441\u0435\u0440\u0435\u0434\u0438\u043d\u0430 \u043d\u0438\u0436\u043d\u0435\u0439 \u043f\u043e\u043b\u043e\u0432\u0438\u043d\u044b \u0441\u0442\u0435\u0440\u0436\u043d\u044f \u043e\u043a\u0430\u0437\u0430\u043b\u0430\u0441\u044c \u043d\u0430 \u043e\u0434\u043d\u043e\u0439 \u0432\u0435\u0440\u0442\u0438\u043a\u0430\u043b\u0438 \u0441 \u0442\u043e\u0447\u043a\u043e\u0439 \u043f\u043e\u0434\u0432\u0435\u0441\u0430. \u0420\u0435\u0448\u0435\u043d\u0438\u0435. \u041f\u0440\u0438 \u0440\u0435\u0448\u0435\u043d\u0438\u0438 \u0437\u0430\u0434\u0430\u0447\u0438 \u0431\u0443\u0434\u0435\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u043c \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u0437\u0430\u0434\u0430\u0447 \u043f\u043e \u0441\u0442\u0430\u0442\u0438\u043a\u0435. 1. \u0412\u044b\u0431\u0435\u0440\u0435\u043c \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u043e\u0442\u0441\u0447\u0435\u0442\u0430\u2026 <span class=\"read-more\"><a href=\"https:\/\/www.fizika-online.ru\/?page_id=14155\">\u0427\u0438\u0442\u0430\u0442\u044c \u0434\u0430\u043b\u0435\u0435 &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages\/14155"}],"collection":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14155"}],"version-history":[{"count":3,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages\/14155\/revisions"}],"predecessor-version":[{"id":14160,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages\/14155\/revisions\/14160"}],"wp:attachment":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}