Video: Qhov piv txwv ntawm angular momentum yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Piv txwv Kev txuag ntawm Angular Momentum
Xav txog ib tug spinning skater. Lwm nrov piv txwv ntawm kev txuag ntawm angular zog yog tus neeg tuav lub tsheb kauj vab tig ntawm lub rooj zaum tig. Tus neeg ntawd tig hla lub tsheb kauj vab, ua rau nws tig mus rau qhov sib txawv, raws li qhia hauv qab no.
Ua raws li qhov kev pom no, lub zog angular txhais li cas?
Angular Momentum . Cov angular zog ntawm ib yam khoom rigid yog txhais raws li cov khoom ntawm lub caij ntawm inertia thiab lub lub kaum sab xis ceev. Nws yog analogous rau linear lub zog thiab yog nyob rau hauv lub hauv paus kev txwv ntawm kev txuag ntawm angular zog txoj cai yog tsis muaj torque sab nraud ntawm cov khoom.
Lub angular momentum ntawm lub ntiaj teb yog dab tsi? Qhov nruab nrab angular zog yog mvr, kho cov Lub ntiaj teb zoo li nws yog point mass. Lub ntiaj teb siv 365 hnub mus rau ib lub voj voog ua tiav nyob ib ncig ntawm Sun. Tsis muaj lub npe tshwj xeeb rau kev sib xyaw ua ke ntawm cov units. Kev taw qhia ntawm vector yog perpendicular rau lub orbit.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog angular momentum ntsuas nyob rau hauv?
Tsim nyog MKS lossis SI units rau angular zog yog kilometer squared ib ob (kg-m2/sec).
Qhov unit ntawm inertia yog dab tsi?
Cov chav tsev rau inertia yog tib yam li cov units rau qhov hnyav, kg chav tsev ntawm moment of inertia yog kg. m2 ua. m 2 ua. Inertia yog qhov tsis kam mus rau linear acceleration los ntawm lub zog siv rau lub cev. Lub sijhawm ntawm inertia yog qhov tsis kam rau angular acceleration los ntawm torque siv rau lub cev.
Pom zoo:
Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ntab?
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Qhov txawv ntawm qhov xwm txheej thiab qhov chaw piv txwv yog dab tsi?
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