Lub zog Kinetic thiab kev ua haujlwm lub cev

Cov Khoom Siv Ua Haujlwm ntawm Kinetic Energy thiab Physics

Yog tias lub zog ntawm lub cev ua rau ib yam khoom, yam khoom ntawd yuav nrawm dua (thiab hloov chaw). Thaum ib yam khoom nrawm dua, nws qhov ceev yuav hloov. Peb hais tau tias qhov haujlwm uas lub zog ntawm lub cev ua yog cuam tshuam nrog qhov ceev pib thiab qhov ceev kawg ntawm yam khoom.
Cov haujlwm ua tiav rau ntawm ib yam khoom los ntawm lub zog tag nrho tas mus li:
Tag nrho cov kev siv zog (W) = Lub zog tshwm sim (F tag nrho) x kev hloov chaw (s)
Txoj Cai Thib Ob ntawm Newton hais tias yog tias muaj lub zog tag nrho ua rau ib yam khoom, yam khoom ntawd yuav raug kev nrawm dua.
Tag nrho cov haujlwm (W) = (m)(a) s
Yog tias tag nrho lub zog tsis hloov pauv, ces qhov kev nrawm uas cov khoom ntawd ntsib kuj tsis hloov pauv. Yog li ntawd, peb tuaj yeem hloov qhov kev nrawm (a) thiab kev hloov chaw (s) nrog cov qauv sib npaug kev txav mus los linear uas nrawm nrawm.
Cov Ntaub Ntawv:
EK_t = lub zog kinetic kawg, EK_o = lub zog pib ntawm lub zog, m = pawg, v_t = qhov ceev kawg, v_o = qhov ceev pib.

Qhov kev sib npaug no yog kev ua haujlwm-kinetic zog theoremLub zog ua haujlwm-kinetic qhia peb tias qhov ua haujlwm lossis kev siv zog ua los ntawm lub zog tshwm sim rau ntawm ib yam khoom yog sib npaug rau qhov kev hloov pauv ntawm lub zog kinetic ntawm yam khoom. Lub zog ua haujlwm-kinetic kuj qhia peb tias lub zog kinetic ntawm ib yam khoom yog sib npaug rau tag nrho cov haujlwm uas xav tau los ua kom lub khoom nrawm los ntawm so mus rau kev txav mus los ntawm qhov ceev lossis rov qab.

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