{"id":14384,"date":"2025-05-12T13:45:29","date_gmt":"2025-05-12T13:45:29","guid":{"rendered":"https:\/\/www.fizika-online.ru\/?page_id=14384"},"modified":"2025-05-12T14:44:52","modified_gmt":"2025-05-12T14:44:52","slug":"%d0%b7%d0%b0%d0%b4%d0%b0%d1%87%d0%b8-%d0%b5%d0%b3%d1%8d-%d0%b7%d0%b0%d0%b4%d0%b0%d1%87%d0%b0-%d1%81%d1%82%d0%b3%d1%81%d1%82%d0%b5%d0%b3%d1%8d24","status":"publish","type":"page","link":"https:\/\/www.fizika-online.ru\/?page_id=14384","title":{"rendered":"\u0417\u0430\u0434\u0430\u0447\u0438 \u0415\u0413\u042d. \u0417\u0430\u0434\u0430\u0447\u0430 \u0421\u0442\u0413\u0421\u0442\u0415\u0413\u042d24"},"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\u0413\u043b\u0430\u0434\u043a\u0438\u0439 \u0446\u0438\u043b\u0438\u043d\u0434\u0440 \u043b\u0435\u0436\u0438\u0442 \u043c\u0435\u0436\u0434\u0443 \u0434\u0432\u0443\u043c\u044f \u043f\u043b\u043e\u0441\u043a\u043e\u0441\u0442\u044f\u043c\u0438, \u043e\u0434\u043d\u0430 \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0432\u0435\u0440\u0442\u0438\u043a\u0430\u043b\u044c\u043d\u0430, \u0430 \u043b\u0438\u043d\u0438\u044f \u0438\u0445 \u043f\u0435\u0440\u0435\u0441\u0435\u0447\u0435\u043d\u0438\u044f \u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u0430\u043b\u044c\u043d\u0430 (\u0441\u043c.\u202f\u0440\u0438\u0441.). \u0421\u0438\u043b\u0430 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0446\u0438\u043b\u0438\u043d\u0434\u0440\u0430 \u043d\u0430 \u0432\u0435\u0440\u0442\u0438\u043a\u0430\u043b\u044c\u043d\u0443\u044e \u0441\u0442\u0435\u043d\u043a\u0443 \u0432 $n=\\sqrt{3}$ \u0440\u0430\u0437\u0430 \u043f\u0440\u0435\u0432\u044b\u0448\u0430\u0435\u0442 \u0441\u0438\u043b\u0443 \u0442\u044f\u0436\u0435\u0441\u0442\u0438, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0443\u044e \u043d\u0430 \u0446\u0438\u043b\u0438\u043d\u0434\u0440. \u041d\u0430\u0439\u0434\u0438\u0442\u0435 \u0443\u0433\u043e\u043b $\\alpha$ \u043c\u0435\u0436\u0434\u0443 \u043f\u043b\u043e\u0441\u043a\u043e\u0441\u0442\u044f\u043c\u0438. \u0421\u0434\u0435\u043b\u0430\u0439\u0442\u0435 \u0440\u0438\u0441\u0443\u043d\u043e\u043a, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0443\u043a\u0430\u0436\u0438\u0442\u0435 \u0441\u0438\u043b\u044b, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043d\u0430 \u0446\u0438\u043b\u0438\u043d\u0434\u0440.<\/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-14383\" src=\"https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/05\/2-44.jpg\" alt=\"\" width=\"202\" height=\"289\" srcset=\"https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/05\/2-44.jpg 255w, https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/05\/2-44-210x300.jpg 210w\" sizes=\"(max-width: 202px) 100vw, 202px\" \/><\/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. \u0421\u0438\u0441\u0442\u0435\u043c\u0443 \u043e\u0442\u0441\u0447\u0435\u0442\u0430 \u0441\u0432\u044f\u0436\u0435\u043c \u0441 \u0417\u0435\u043c\u043b\u0435\u0439, \u0442\u0430\u043a\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u043e\u0442\u0441\u0447\u0435\u0442\u0430 \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. \u0412\u044b\u043f\u043e\u043b\u043d\u0438\u043c \u0447\u0435\u0440\u0442\u0435\u0436 \u0441 \u0443\u043a\u0430\u0437\u0430\u043d\u0438\u0435\u043c \u0432\u0441\u0435\u0445 \u0441\u0438\u043b, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u043d\u0430 \u0442\u0435\u043b\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u044b.<\/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-14387\" src=\"https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/05\/2-45.jpg\" alt=\"\" width=\"389\" height=\"529\" srcset=\"https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/05\/2-45.jpg 389w, https:\/\/www.fizika-online.ru\/wp-content\/uploads\/2025\/05\/2-45-221x300.jpg 221w\" sizes=\"(max-width: 389px) 100vw, 389px\" \/><\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">3. \u0417\u0430\u043f\u0438\u0448\u0435\u043c \u043f\u0435\u0440\u0432\u043e\u0435 \u0443\u0441\u043b\u043e\u0432\u0438\u0435 \u0440\u0430\u0432\u043d\u043e\u0432\u0435\u0441\u0438\u044f<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$\\vec{N}_1+\\vec{N}_2+m\\vec{g}=0$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$N_1-N_2 \\, cos\\alpha=0$,\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (1)<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$N_2 \\, sin\\alpha-mg=0$.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0(2)<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\"><!-- Yandex.RTB R-A-1598022-3 --><\/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><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">\u041d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0435 \u0443\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f \u0443\u0436\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0440\u0435\u0448\u0438\u0442\u044c \u0437\u0430\u0434\u0430\u0447\u0443. \u041f\u043e \u0442\u0440\u0435\u0442\u044c\u0435\u043c\u0443 \u0437\u0430\u043a\u043e\u043d\u0443 \u041d\u044c\u044e\u0442\u043e\u043d\u0430, \u0441\u0438\u043b\u0430, \u0441 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0446\u0438\u043b\u0438\u043d\u0434\u0440 \u0434\u0430\u0432\u0438\u0442 \u043d\u0430 \u043f\u043b\u043e\u0441\u043a\u043e\u0441\u0442\u044c, \u0440\u0430\u0432\u043d\u0430 \u0441\u0438\u043b\u0435 \u0441\u00a0 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u043b\u043e\u0441\u043a\u043e\u0441\u0442\u044c \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u0435\u0442 \u043d\u0430 \u0446\u0438\u043b\u0438\u043d\u0434\u0440. \u0422\u0430\u043a \u043a\u0430\u043a \u0441\u0438\u043b\u0430 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0446\u0438\u043b\u0438\u043d\u0434\u0440\u0430 \u043d\u0430 \u0432\u0435\u0440\u0442\u0438\u043a\u0430\u043b\u044c\u043d\u0443\u044e \u0441\u0442\u0435\u043d\u043a\u0443 \u0432 $n=\\sqrt{3}$ \u0440\u0430\u0437\u0430 \u043f\u0440\u0435\u0432\u044b\u0448\u0430\u0435\u0442 \u0441\u0438\u043b\u0443 \u0442\u044f\u0436\u0435\u0441\u0442\u0438, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0443\u044e \u043d\u0430 \u0446\u0438\u043b\u0438\u043d\u0434\u0440, \u0442\u043e \u0438 \u0441\u0438\u043b\u0430 \u0441 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0432\u0435\u0440\u0442\u0438\u043a\u0430\u043b\u044c\u043d\u0430\u044f \u0441\u0442\u0435\u043d\u043a\u0430 \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u0435\u0442 \u043d\u0430 \u0446\u0438\u043b\u0438\u043d\u0434\u0440 \u0442\u0430\u043a\u0436\u0435 \u0432 $n=\\sqrt{3}$ \u0440\u0430\u0437\u0430 \u043f\u0440\u0435\u0432\u044b\u0448\u0430\u0435\u0442 \u0441\u0438\u043b\u0443 \u0442\u044f\u0436\u0435\u0441\u0442\u0438, \u0442.\u0435. $N_1=\\sqrt{3} \\, mg$. \u0423\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 (1) \u043c\u043e\u0436\u043d\u043e \u043f\u0435\u0440\u0435\u043f\u0438\u0441\u0430\u0442\u044c \u0432 \u0432\u0438\u0434\u0435<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$\\sqrt{3} \\, mg-N_2 \\, cos\\alpha=0$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$N_2 \\, cos\\alpha=\\sqrt{3} \\, mg$.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0(3)<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">\u0423\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 (2) \u043f\u0435\u0440\u0435\u043f\u0438\u0448\u0435\u043c \u0432 \u0442\u0430\u043a\u043e\u043c \u0436\u0435 \u0432\u0438\u0434\u0435, \u0447\u0442\u043e \u0438 \u0443\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 (3)<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$N_2 \\, sin\\alpha=mg$.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0(4)<\/span><\/p>\n<p><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">\u0414\u0435\u043b\u0438\u043c \u0443\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 (3) \u043d\u0430 \u0443\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 (4)<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$\\frac{N_2 \\, cos\\alpha}{N_2 \\, sin\\alpha}=\\frac{\\sqrt{3} \\, mg}{mg}$,<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: georgia, palatino, serif; font-size: 12pt; color: #000000;\">$ctg \\, \\alpha=\\sqrt{3}\\Rightarrow \\alpha=30^{\\circ}$.<\/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>$30^{\\circ}$.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0417\u0430\u0434\u0430\u0447\u0430.\u00a0\u0413\u043b\u0430\u0434\u043a\u0438\u0439 \u0446\u0438\u043b\u0438\u043d\u0434\u0440 \u043b\u0435\u0436\u0438\u0442 \u043c\u0435\u0436\u0434\u0443 \u0434\u0432\u0443\u043c\u044f \u043f\u043b\u043e\u0441\u043a\u043e\u0441\u0442\u044f\u043c\u0438, \u043e\u0434\u043d\u0430 \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0432\u0435\u0440\u0442\u0438\u043a\u0430\u043b\u044c\u043d\u0430, \u0430 \u043b\u0438\u043d\u0438\u044f \u0438\u0445 \u043f\u0435\u0440\u0435\u0441\u0435\u0447\u0435\u043d\u0438\u044f \u0433\u043e\u0440\u0438\u0437\u043e\u043d\u0442\u0430\u043b\u044c\u043d\u0430 (\u0441\u043c.\u202f\u0440\u0438\u0441.). \u0421\u0438\u043b\u0430 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0446\u0438\u043b\u0438\u043d\u0434\u0440\u0430 \u043d\u0430 \u0432\u0435\u0440\u0442\u0438\u043a\u0430\u043b\u044c\u043d\u0443\u044e \u0441\u0442\u0435\u043d\u043a\u0443 \u0432 $n=\\sqrt{3}$ \u0440\u0430\u0437\u0430 \u043f\u0440\u0435\u0432\u044b\u0448\u0430\u0435\u0442 \u0441\u0438\u043b\u0443 \u0442\u044f\u0436\u0435\u0441\u0442\u0438, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0443\u044e \u043d\u0430 \u0446\u0438\u043b\u0438\u043d\u0434\u0440. \u041d\u0430\u0439\u0434\u0438\u0442\u0435 \u0443\u0433\u043e\u043b $\\alpha$ \u043c\u0435\u0436\u0434\u0443 \u043f\u043b\u043e\u0441\u043a\u043e\u0441\u0442\u044f\u043c\u0438. \u0421\u0434\u0435\u043b\u0430\u0439\u0442\u0435 \u0440\u0438\u0441\u0443\u043d\u043e\u043a, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0443\u043a\u0430\u0436\u0438\u0442\u0435 \u0441\u0438\u043b\u044b, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043d\u0430 \u0446\u0438\u043b\u0438\u043d\u0434\u0440. \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\u2026 <span class=\"read-more\"><a href=\"https:\/\/www.fizika-online.ru\/?page_id=14384\">\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\/14384"}],"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=14384"}],"version-history":[{"count":6,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages\/14384\/revisions"}],"predecessor-version":[{"id":14391,"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=\/wp\/v2\/pages\/14384\/revisions\/14391"}],"wp:attachment":[{"href":"https:\/\/www.fizika-online.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}