Video: Yuav ua li cas koj xam rotational kinetic zog?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
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, lub zog rotational kinetic ntawm lub cev yog dab tsi?
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 ceev ntawm ib lub log spinning doubles, nws lub zog kinetic nce los ntawm ib qho ntawm plaub.
Qhov thib ob, dab tsi yog qhov txawv ntawm kev txhais lus thiab rotational kinetic zog? Lub xwb qhov sib txawv ntawm rotational thiab txhais lus kinetic zog yog tias txhais lus yog txoj kab ncaj nraim thaum kev hloov tsis yog. Cov kev hloov kev txav ntawm lub log tsheb txhais tau tias nws muaj rotational kinetic zog thaum lub zog ntawm lub tsheb kauj vab raws txoj kev txhais tau hais tias lub log tsheb kuj muaj txhais lus kinetic zog.
Kuj kom paub, koj pom lub zog kinetic li cas?
Nyob rau hauv classical mechanics, kinetic zog (KE) yog sib npaug rau ib nrab ntawm cov khoom hnyav (1/2 * m) muab faib los ntawm qhov nrawm squared. Piv txwv li, yog tias ib yam khoom uas hnyav 10 kg (m = 10 kg) yog txav ntawm qhov nrawm ntawm 5 meters ib ob (v = 5 m / s), kinetic zog yog sib npaug rau 125 Joules, los yog (1/2 * 10 kg) * 5 m / s2.
Puas yog inertia kinetic zog?
Inertia , Momentum, Impulse, thiab Kinetic Zog . Yog tias ib qho khoom txav mus, nws yuav txav mus rau tib lub nrawm ntawm tib txoj kev mus ib txhis tshwj tsis yog lub zog tshiab hloov lossis nres nws cov lus tsa suab. Ib yam khoom nyiam ua txhua yam nws ua yog hu ua inertia . Ib yam khoom loj txiav txim siab npaum li cas inertia nws muaj.
Pom zoo:
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Qhov unit ntawm rotational kinetic zog yog dab tsi?
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Yuav ua li cas koj xam rotational acceleration?
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