{"id":2453,"date":"2026-04-25T02:48:45","date_gmt":"2026-04-25T02:48:45","guid":{"rendered":"https:\/\/77.buffdemo.com\/index.php\/2026\/04\/25\/tai-lieu-vat-ly-10-chuong-3-dong-luc-hoc\/"},"modified":"2026-04-25T02:48:45","modified_gmt":"2026-04-25T02:48:45","slug":"tai-lieu-vat-ly-10-chuong-3-dong-luc-hoc","status":"publish","type":"post","link":"https:\/\/77.buffdemo.com\/index.php\/2026\/04\/25\/tai-lieu-vat-ly-10-chuong-3-dong-luc-hoc\/","title":{"rendered":"T\u00e0i li\u1ec7u V\u1eadt l\u00fd 10 \u2013 Ch\u01b0\u01a1ng 3 \u0110\u1ed9ng l\u1ef1c h\u1ecdc"},"content":{"rendered":"
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T\u00e0i li\u1ec7u \u00f4n thi chia s\u1ebb t\u00e0i li\u1ec7u V\u1eadt l\u00fd 10 \u2013 Ch\u01b0\u01a1ng 3 \u0110\u1ed9ng l\u1ef1c h\u1ecdc ho\u00e0n to\u00e0n mi\u1ec5n ph\u00ed. T\u00e0i li\u1ec7u \u0111\u01b0\u1ee3c bi\u00ean so\u1ea1n b\u00e1m s\u00e1t theo ch\u01b0\u01a1ng tr\u00ecnh m\u1edbi, bao g\u1ed3m l\u00fd thuy\u1ebft, b\u00e0i t\u1eadp luy\u1ec7n t\u1eadp v\u00e0 l\u1eddi gi\u1ea3i chi ti\u1ebft.<\/p>\n

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T\u00e0i li\u1ec7u V\u1eadt l\u00fd 10 \u2013 Ch\u01b0\u01a1ng 2 \u0110\u1ed9ng h\u1ecdc<\/a><\/strong><\/p>\n

<\/span>T\u00e0i li\u1ec7u ch\u01b0\u01a1ng \u0110\u1ed9ng l\u1ef1c h\u1ecdc V\u1eadt l\u00fd 1<\/strong>0<\/span><\/h2>\n

B\u1ed9 t\u00e0i li\u1ec7u cung c\u1ea5p c\u1ea3 l\u00fd thuy\u1ebft t\u00f3m t\u1eaft, ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i, v\u00e0 b\u00e0i t\u1eadp c\u00e1c ch\u1ee7 \u0111\u1ec1 c\u1ed1t l\u00f5i trong ch\u01b0\u01a1ng \u0110\u1ed9ng l\u1ef1c h\u1ecdc v\u00e0 T\u0129nh h\u1ecdc, c\u1ee5 th\u1ec3 l\u00e0:<\/p>\n

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  1. C\u00e1c \u0110\u1ecbnh lu\u1eadt Newton\u00a0(I, II, III).<\/li>\n
  2. T\u1ed5ng h\u1ee3p, Ph\u00e2n t\u00edch l\u1ef1c v\u00e0 C\u00e2n b\u1eb1ng l\u1ef1c.<\/li>\n
  3. C\u00e1c lo\u1ea1i l\u1ef1c c\u01a1 h\u1ecdc\u00a0(Tr\u1ecdng l\u1ef1c, L\u1ef1c c\u0103ng d\u00e2y, L\u1ef1c ma s\u00e1t, L\u1ef1c c\u1ea3n, L\u1ef1c n\u00e2ng).<\/li>\n
  4. Moment l\u1ef1c v\u00e0 C\u00e2n b\u1eb1ng v\u1eadt r\u1eafn.<\/li>\n
  5. B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh v\u00e0 \u00f4n t\u1eadp.<\/li>\n<\/ol>\n

    <\/span>C\u00e1c ch\u1ee7 \u0111\u1ec1 ch\u00ednh g\u1ed3m:<\/span><\/h3>\n
    \n\n\n\n\n\n\n\n\n
    Ch\u1ee7 \u0111\u1ec1<\/th>\nN\u1ed9i dung ch\u00ednh \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft<\/th>\n<\/tr>\n<\/thead>\n
    \u0110\u1ecbnh lu\u1eadt Newton\u00a0(Ch\u1ee7 \u0111\u1ec1 14, 15, 16)<\/td>\n\u0110\u1ecbnh lu\u1eadt I (Qu\u00e1n t\u00ednh):<\/strong>\u00a0B\u1ea3o to\u00e0n tr\u1ea1ng th\u00e1i \u0111\u1ee9ng y\u00ean ho\u1eb7c chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng \u0111\u1ec1u khi h\u1ee3p l\u1ef1c b\u1eb1ng kh\u00f4ng.\u00a0<\/p>\n

    \u0110\u1ecbnh lu\u1eadt II:<\/strong>\u00a0Quan h\u1ec7 gi\u1eefa H\u1ee3p l\u1ef1c, Kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 Gia t\u1ed1c (\"\\vec{F}).\u00a0<\/p>\n

    \u0110\u1ecbnh lu\u1eadt III:<\/strong>\u00a0L\u1ef1c v\u00e0 Ph\u1ea3n l\u1ef1c (t\u00e1c d\u1ee5ng l\u00ean hai v\u1eadt kh\u00e1c nhau, c\u00f9ng \u0111\u1ed9 l\u1edbn, ng\u01b0\u1ee3c chi\u1ec1u).<\/td>\n<\/tr>\n

    C\u00e1c Lo\u1ea1i L\u1ef1c\u00a0(Ch\u1ee7 \u0111\u1ec1 17, 18, 19)<\/td>\nTr\u1ecdng l\u1ef1c v\u00e0 L\u1ef1c c\u0103ng d\u00e2y:<\/strong>\u00a0C\u00f4ng th\u1ee9c \"P=m.g\", kh\u00e1i ni\u1ec7m tr\u1ecdng t\u00e2m, \u0111\u1eb7c \u0111i\u1ec3m l\u1ef1c c\u0103ng d\u00e2y.\u00a0<\/p>\n

    L\u1ef1c ma s\u00e1t:<\/strong>\u00a0L\u1ef1c ma s\u00e1t tr\u01b0\u1ee3t (\"F_{ms}), l\u1ef1c ma s\u00e1t ngh\u1ec9, c\u00e1ch x\u00e1c \u0111\u1ecbnh \u00e1p l\u1ef1c \"N\" tr\u00ean m\u1eb7t ph\u1eb3ng ngang\/nghi\u00eang.\u00a0<\/p>\n

    L\u1ef1c c\u1ea3n v\u00e0 L\u1ef1c n\u00e2ng:<\/strong>\u00a0\u0110\u1eb7c \u0111i\u1ec3m l\u1ef1c c\u1ea3n trong ch\u1ea5t l\u01b0u (ph\u1ee5 thu\u1ed9c t\u1ed1c \u0111\u1ed9 v\u00e0 h\u00ecnh d\u1ea1ng), c\u00f4ng th\u1ee9c l\u1ef1c \u0111\u1ea9y Archimedes (\"F_A).<\/td>\n<\/tr>\n

    H\u1ee3p l\u1ef1c v\u00e0 C\u00e2n b\u1eb1ng\u00a0(Ch\u1ee7 \u0111\u1ec1 13, 22)<\/td>\nT\u1ed5ng h\u1ee3p l\u1ef1c:<\/strong>\u00a0Quy t\u1eafc h\u00ecnh b\u00ecnh h\u00e0nh cho hai l\u1ef1c \u0111\u1ed3ng quy, c\u00e1c tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t (c\u00f9ng ph\u01b0\u01a1ng, vu\u00f4ng g\u00f3c, b\u1ea5t k\u00ec \"F^2).\u00a0<\/p>\n

    \u0110i\u1ec1u ki\u1ec7n c\u00e2n b\u1eb1ng:<\/strong>\u00a0H\u1ee3p l\u1ef1c b\u1eb1ng kh\u00f4ng.\u00a0<\/p>\n

    Th\u1ef1c h\u00e0nh:<\/strong>\u00a0H\u01b0\u1edbng d\u1eabn th\u00ed nghi\u1ec7m t\u1ed5ng h\u1ee3p hai l\u1ef1c \u0111\u1ed3ng quy v\u00e0 song song.<\/td>\n<\/tr>\n

    T\u0129nh h\u1ecdc V\u1eadt r\u1eafn\u00a0(Ch\u1ee7 \u0111\u1ec1 21)<\/td>\nMoment l\u1ef1c:\u00a0<\/strong>Kh\u00e1i ni\u1ec7m, c\u00f4ng th\u1ee9c \"M=F.d\".\u00a0<\/p>\n

    Ng\u1eabu l\u1ef1c:\u00a0<\/strong>H\u1ec7 hai l\u1ef1c song song, ng\u01b0\u1ee3c chi\u1ec1u, c\u00f9ng \u0111\u1ed9 l\u1edbn.\u00a0<\/p>\n

    \u0110i\u1ec1u ki\u1ec7n c\u00e2n b\u1eb1ng t\u1ed5ng qu\u00e1t c\u1ee7a v\u1eadt r\u1eafn:\u00a0<\/strong>T\u1ed5ng l\u1ef1c b\u1eb1ng kh\u00f4ng V\u00c0 T\u1ed5ng Moment l\u1ef1c b\u1eb1ng kh\u00f4ng.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

    Minh h\u1ecda t\u00e0i li\u1ec7u<\/strong><\/p>\n

    \"V\u1eadt<\/figure>\n

    <\/span>C\u00e1c d\u1ea1ng b\u00e0i t\u1eadp ch\u01b0\u01a1ng 3 V\u1eadt l\u00fd 10<\/span><\/h3>\n

    A. D\u1ea1ng b\u00e0i v\u1ec1 \u0110\u1ecbnh lu\u1eadt Newton v\u00e0 T\u1ed5ng h\u1ee3p l\u1ef1c<\/strong><\/p>\n