Mphamvu yapakati yozungulira mofanana - mavuto ndi mayankho

1. Mpira wa 0.1 kg, wolumikizidwa kumapeto kwa chingwe chopingasa, umazunguliridwa mu bwalo la radius 50 cm ndipo liwiro la angular la mpira ndi s 4 rad s -1 . Kodi kukula kwa mphamvu ya centripetal ndi kotani?

Zodziwika:Mphamvu yapakati yozungulira mofanana - mavuto ndi mayankho 1

Kulemera (m) = magalamu 100 = 100/1000 kg = 1/10 kg = 0.1 kg

Liwiro la angular ( ω ) = 4 radians/se cond

Ulalo wozungulira (r) = 50 cm = 50/100 m = 0.5 m

Kufunidwa: Mphamvu yapakati

Yankho:

Mphamvu yapakati ndi mphamvu yeniyeni yomwe imapangitsa kuti kuthamanga kwapakati kukhale kofanana ndi :

∑ F = ma r

∑ F = mv 2 /r = m ω 2 r

∑ F = mphamvu yeniyeni = mphamvu yapakati , m = kulemera , v = liwiro , ω = liwiro la angular , r = radius

∑ F = m ω 2 r = (0.1)(4) 2 (0.5) = (0.1)(16)(0,5) = 0.8 Newtons

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2. Mpira ukuzungulira mofanana mu bwalo lozungulira. Ngati liwiro lasintha kufika kanayi kuposa mtengo woyamba, kodi mphamvu ya pakati ndi yotani…..

Zodziwika:Mphamvu yapakati yozungulira mofanana - mavuto ndi mayankho 2

Misa = m

Liwiro = v

Liwiro loyambirira = v o

Ulalo wozungulira (r) = r

Kufunidwa: Kukula kwa mphamvu yapakati

Yankho:

Mphamvu yapakati yozungulira mofanana - mavuto ndi mayankho 3

3. Mzere wozungulira wa radius R wapangidwa kuti galimoto yoyenda pa liwiro la 12 ms -1 itha kuyendetsa bwino kutembenuka. Chiŵerengero cha kukangana kosasinthasintha pakati pa galimoto ndi msewu = 0.4. Kodi radius R ndi chiyani? Kuthamanga chifukwa cha mphamvu yokoka ( g ) = 10 ms -2.

Zodziwika:

Liwiro (v) = 12 m/s

Koyefifiti ya kukangana kosasinthasintha ( μs ) = 0.4

Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s 2

Akufuna: Radius (R)

Yankho:

Mphamvu yapakati yozungulira mofanana - mavuto ndi mayankho 1

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  1. Kulemera ndi kulemera
  2. mphamvu yachibadwa
  3. Lamulo lachiwiri la Newton la kayendedwe
  4. Mkangano mphamvu
  5. Kuyenda pamalo opingasa popanda mphamvu yokangana
  6. Kuyenda kwa matupi awiri omwe ali ndi kuthamanga komweko pamalo opingasa ndi mphamvu yokangana
  7. Kuyenda pa ndege yopendekeka popanda mphamvu yokangana
  8. Kuyenda pa ndege yokhotakhota ndi mphamvu yokangana
  9. Kuyenda mu elevator
  10. Kuyenda kwa matupi kumalumikizidwa ndi zingwe ndi ma pulleys
  11. Matupi awiri omwe ali ndi kukula kofanana kwa kuthamanga
  12. Kuzungulira makona osalala - mphamvu ya kayendedwe kozungulira
  13. Kuzungulira mkombero wozungulira - mphamvu ya kuyenda kozungulira
  14. Kuyenda kofanana mozungulira mopingasa
  15. Mphamvu yapakati yozungulira yofanana

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