Qhov txawv ntawm momentum thiab momenta yog dab tsi?
Qhov txawv ntawm momentum thiab momenta yog dab tsi?

Video: Qhov txawv ntawm momentum thiab momenta yog dab tsi?

Video: Qhov txawv ntawm momentum thiab momenta yog dab tsi?
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Ib qho tseem ceeb txawv yog tias lub zog yog vector kom muaj nuj nqis - nws muaj kev taw qhia hauv qhov chaw, thiab lub sijhawm ua ke zoo li lub zog ua.

Hais txog qhov no, puas yog lub zog thiab lub zog kinetic tib yam?

Ib txhia xav lub zog thiab lub zog kinetic yog cov ib yam . Lawv ob leeg muaj feem xyuam rau ib yam khoom qhov nrawm (los yog ceev) thiab loj, tab sis lub zog yog vector kom muaj nuj nqis uas piav txog qhov ntau npaum li cas hauv kev txav. Kinetic zog yog qhov ntsuas ntawm ib qho khoom zog los ntawm kev txav, thiab yog scalar.

Ib yam li ntawd, kev txuag ntawm lub zog yog dab tsi? Kev txuag ntawm lub zog yog ib txoj cai tseem ceeb ntawm physics uas hais tias cov lub zog ntawm ib qho system yog tas li yog tias tsis muaj lwm lub zog ua haujlwm ntawm qhov system. Nws yog embodied nyob rau hauv Newton thawj txoj cai (txoj cai ntawm inertia).

Kuj Paub, qhov txawv ntawm lub zog angular thiab linear momentum yog dab tsi?

Lub ntsiab qhov sib txawv ntawm linear momentum thiab angular zog yog tias linear zog yog ib yam khoom ntawm ib yam khoom uas yog nyob rau hauv cov lus tsa suab nrog rau ib tug reference point (piv txwv li tej yam khoom hloov nws txoj hauj lwm nrog rau qhov kev siv point) thaum angular zog yog ib yam khoom ntawm cov khoom uas tsis yog hloov xwb

Momentum ntsuas dab tsi?

Momentum yog ib qho cuab yeej ntawm kev txav uas nyob rau hauv classical physics yog ib vector (directional) kom muaj nuj nqis uas nyob hauv kaw kaw yog khaws cia thaum sib tsoo. Hauv Newtonian physics lub zog yog ntsuas raws li cov khoom lag luam ntawm qhov loj thiab cov khoom siv nrawm ntawm lub cev.

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