Trong chuy\u00ean \u0111\u1ec1 v\u1eadt l\u00fd trung h\u1ecdc ph\u1ed5 th\u00f4ng th\u00ec c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 con l\u1eafc l\u00f2 xo n\u1eb1m ngang l\u00e0 m\u1ed9t trong nh\u1eefng d\u1ea1ng b\u00e0i t\u1eadp quan tr\u1ecdng h\u1ecdc sinh c\u1ea7n l\u01b0u \u00fd khi gi\u1ea3i b\u00e0i t\u1eadp.<\/p>\n

1\/ C\u1ea5u t\u1ea1o v\u00e0 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a con l\u1eafc l\u00f2 xo n\u1eb1m ngang:<\/h2>\n

a\/ C\u1ea5u t\u1ea1o con l\u1eafc l\u00f2 xo n\u1eb1m ngang<\/h3>\n

Bao g\u1ed3m 1 l\u00f2 xo c\u00f3 \u0111\u1ed9 c\u1ee9ng l\u00e0 k v\u00e0 c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng kh\u00f4ng \u0111\u00e1ng k\u1ec3, m\u1ed9t \u0111\u1ea7u \u0111\u01b0\u1ee3c gi\u1eef c\u1ed1 \u0111\u1ecbnh v\u00e0 m\u1ed9t \u0111\u1ea7u \u0111\u01b0\u1ee3c g\u1eafn v\u1edbi m\u1ed9t v\u1eadt c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng m<\/p>\n

<\/p>\n

b\/ ho\u1ea1t \u0111\u1ed9ng c\u1ee7a con l\u1eafc l\u00f2 xo n\u1eb1m ngang<\/h3>\n

B\u1ea1n \u0111\u1ea7u v\u1eadt m \u0111\u1ee9ng y\u00ean t\u1ea1i v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng O
\nK\u00edch th\u00edch l\u00ean v\u1eadt l\u00e0m cho v\u1eadt dao \u0111\u1ed9ng theo ph\u01b0\u01a1ng n\u1eb1m ngang th\u00ec v\u1eadt c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng m s\u1ebd dao \u0111\u1ed9ng qua l\u1ea1i v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng O<\/p>\n

2\/ Ch\u1ee9ng minh dao \u0111\u1ed9ng c\u1ee7a con l\u1eafc l\u00f2 xo n\u1eb1m ngang l\u00e0 dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a<\/h2>\n

\u0110\u1ec3 ch\u1ee9ng minh \u0111\u01b0\u1ee3c dao \u0111\u1ed9ng c\u1ee7a m l\u00e0 dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a quanh v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng O ta c\u1ea7n s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ed9ng l\u1ef1c h\u1ecdc.<\/p>\n

<\/p>\n

\n
• Trong qu\u00e1 tr\u00ecnh dao \u0111\u1ed9ng c\u1ee7a con l\u1eafc l\u00f2 xo n\u1eb1m ngang t\u1ea1i th\u1eddi \u0111i\u1ec3m v\u1eadt c\u00f3 li \u0111\u1ed9 l\u00e0 x, ta c\u00f3 l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean v\u1eadt bao g\u1ed3m:<\/li>\n
• Tr\u1ecdng l\u1ef1c: P<\/li>\n
• Ph\u1ea3n l\u1ef1c: N<\/li>\n
• L\u1ef1c \u0111\u00e0n h\u1ed3i: Fdh<\/li>\n
• Theo \u0111\u1ecbnh lu\u1eadt II Niu t\u01a1n ta c\u00f3: m.a= P + N + Fdh<\/li>\n
• Chi\u1ebfu tr\u00ean tr\u1ee5c t\u1ecda \u0111\u1ed9 ta c\u00f3: ma = -Fdh = -kx<\/li>\n
• T\u1eeb \u0111\u00f3 ta c\u00f3\u00a0:<\/li>\n
• T\u1eeb \u0111\u00f3 ta c\u00f3 v\u1eadt dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a quanh v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng O v\u1edbi t\u1ea7n s\u1ed1 g\u00f3c
  \n<\/li>\n
• Ta c\u00f3 chu k\u1ef3 dao \u0111\u1ed9ng :\u00a0<\/li>\n
• T\u1ea7n s\u1ed1 c\u1ee7a dao \u0111\u1ed9ng:\u00a0<\/li>\n<\/ul>\n

  3\/ N\u0103ng l\u01b0\u1ee3ng dao \u0111\u1ed9ng c\u1ee7a con l\u1eafc l\u00f2 xo n\u1eb1m ngang<\/h2>\n

  N\u0103ng l\u01b0\u1ee3ng dao \u0111\u1ed9ng c\u1ee7a con l\u1eafc l\u00f2 xo n\u1eb1m ngang ch\u00ednh l\u00e0 c\u01a1 n\u0103ng c\u1ee7a h\u1ec7 bao g\u1ed3m \u0111\u1ed9ng n\u0103ng v\u00e0 th\u1ebf n\u0103ng \u0111\u00e0n h\u1ed3i.
  \nTa c\u00f3
  \n\u0110\u1ed9ng n\u0103ng l\u00e0: \u00a0\u00a0Th\u1ebf n\u0103ng l\u00e0:\u00a0
  \nC\u01a1 n\u0103ng c\u1ee7a con l\u1eafc l\u00f2 xo l\u00e0:\u00a0<\/p>\n

  4\/ B\u00e0i t\u1eadp v\u00ed d\u1ee5 v\u1ec1 con l\u1eafc l\u00f2 xo n\u1eb1m ngang<\/h2>\n

  Cho m\u1ed9t con l\u1eafc l\u00f2 xo n\u1eb1m ngang v\u00e0 v\u1eadt m c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng m = 100g. Bi\u1ebft l\u00f2 xo c\u00f3 \u0111\u1ed9 c\u1ee9ng k = 100N\/m. Cho bi\u1ebft \u03c0\u00b2=10 v\u00e0 g = 10m\/s\u00b2. K\u00edch th\u00edch cho v\u1eadt dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a quanh v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng v\u1edbi bi\u00ean \u0111\u1ed9 A = 4cm. T\u00ednh th\u1eddi gian v\u1eadt dao \u0111\u1ed9ng qua v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng theo chi\u1ec1u d\u01b0\u01a1ng.
  \na\/ T\u00ednh chu k\u1ef3 dao \u0111\u1ed9ng v\u00e0 s\u1ed1 l\u1ea7n dao \u0111\u1ed3ng c\u1ee7a con l\u1eafc l\u00f2 xo n\u1eb1m ngang trong 1 ph\u00fat
  \nb\/ Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh dao \u0111\u1ed9ng c\u1ee7a con l\u1eafc l\u00f2 xo
  \nc\/ T\u00ecm v\u1eadn t\u1ed1c v\u00e0 gia t\u1ed1c c\u1ee7a con l\u1eafc l\u00f2 xo khi qua li \u0111\u1ed9 x = 2cm
  \nd\/ T\u00ednh n\u0103ng l\u01b0\u1ee3ng c\u1ee7a dao \u0111\u1ed9ng
  \ne\/ Khi m qua v\u1ecb tr\u00ed li \u0111\u1ed9 x = 3cm t\u00ednh \u0111\u1ed9ng n\u0103ng v\u00e0 th\u1ebf n\u0103ng c\u1ee7a con l\u1eafc l\u00f2 xo
  \nf\/ T\u00ednh li \u0111\u1ed9 c\u1ee7a m khi W\u0111 = Wt<\/p>\n

  B\u00e0i gi\u1ea3i<\/h3>\n

  <\/p>\n

  <\/p>\n

   <\/p>\n","protected":false},"excerpt":{"rendered":"

  Trong chuy\u00ean \u0111\u1ec1 v\u1eadt l\u00fd trung h\u1ecdc ph\u1ed5 th\u00f4ng th\u00ec c\u00e1c d\u1ea1ng b\u00e0i t\u1eadp v\u1ec1 con l\u1eafc l\u00f2 xo n\u1eb1m ngang l\u00e0 m\u1ed9t trong nh\u1eefng d\u1ea1ng b\u00e0i t\u1eadp quan tr\u1ecdng… <\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[450,470],"tags":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/posts\/8417"}],"collection":[{"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/comments?post=8417"}],"version-history":[{"count":0,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/posts\/8417\/revisions"}],"wp:attachment":[{"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/media?parent=8417"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/categories?post=8417"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/tags?post=8417"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}