Video: Lub zog kinetic ntawm lub rotating log yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib qho khoom tig kuj muaj lub zog kinetic. Thaum ib yam khoom yog rotating txog nws qhov chaw ntawm pawg , nws rotational kinetic zog yog K = ½Iω2. Rotational kinetic zog = ½ lub sij hawm ntawm inertia * (angular ceev)2. Thaum lub angular nrawm ntawm ib lub log spinning doubles, nws lub zog kinetic nce los ntawm ib qho ntawm plaub.
Tom qab ntawd, ib tug kuj yuav nug, ua li cas koj nrhiav tau lub kinetic zog ntawm ib tug rotating khoom?
Rotational kinetic zog tuaj yeem hais raws li: E kev hloov =12Iω2 E kev hloov = 1 2 Kuv ω 2 qhov twg ω yog qhov nrawm nrawm thiab kuv yog lub sijhawm ntawm inertia nyob ib ncig ntawm lub axis ntawm kev sib hloov . Lub tshuab ua haujlwm tau siv thaum lub sijhawm kev sib hloov yog lub sij hawm torque kev sib hloov angle: W = τθ W = τ θ.
Ib yam li ntawd, linear kinetic zog yog dab tsi? Linear Kinetic Zog . Cov khoom muaj zog lub npe hu ua kinetic zog , K, los ntawm kev tsim txiaj ntawm lawv cov lus tsa suab. Yog tias ib qho khoom muaj qhov nrawm lossis nrawm v, ces nws kinetic zog yog: K=12mv2. Qhov no hu ua linear kinetic zog.
Ib yam li ntawd, nws tau nug, puas yog rotational kinetic zog sib npaug rau translational kinetic zog?
Tsuas yog qhov sib txawv ntawm kev hloov thiab txhais lus kinetic zog yog tias txhais lus yog txoj kab ncaj nraim thaum kev hloov tsis yog.
Puas yog acceleration yog kev sib hloov?
Cov lub kaum sab xis veloc ib tig khoom yog tus nqi ntawm nws tig . Yog tias lub kaum sab xis nrawm hloov, ces cov khoom kuj muaj ib angular acceleration , uas yog txhais raws li tus nqi ntawm kev hloov ntawm lub lub kaum sab xis ceev.
Pom zoo:
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