Dab tsi yog conservative quab yuam hauv physics?
Dab tsi yog conservative quab yuam hauv physics?

Video: Dab tsi yog conservative quab yuam hauv physics?

Video: Dab tsi yog conservative quab yuam hauv physics?
Video: Paj yias poob qhov ntuj 2/28/2020 2024, Kaum ib hlis
Anonim

Conservative quab yuam, nyob rau hauv physics , ib zog , xws li lub gravitational zog nruab nrab ntawm lub ntiaj teb thiab lwm qhov loj, uas nws txoj haujlwm tsuas yog txiav txim siab los ntawm qhov kawg ntawm qhov khoom ua raws li. Lub zog khaws cia, lossis lub zog muaj peev xwm, tuaj yeem txhais tau tsuas yog rau conservative rog.

Tsuas yog li ntawd, dab tsi yog lub zog tsis muaj kev ntseeg hauv physics?

Tsis yog - conservative rog yog dissipative zog xws li kev sib txhuam lossis cua tsis kam. Cov no zog coj lub zog tawm ntawm qhov system raws li qhov systemprogresses, lub zog uas koj tsis tuaj yeem rov qab los. Cov no zog nyob ntawm qhov chaw; yog li ntawd nws tseem ceeb qhov twg qhov khoom pib thiab nres.

Ib yam li ntawd, koj yuav ua li cas paub yog tias lub zog yog kev saib xyuas? Rau txiav txim yog tias nws yog kev saib xyuas koj tuaj yeem pom qhov ua haujlwm tiag tiag li F = ∇u F = ∇ u. Buta sufficiency test is to take the "cross partial derivatives". Vim ∂2u/∂x∂y ∂ 2 u / ∂ x ∂ y does not depend on the order in which you take partial derivatives you can take the partial w.r.t.

Hais txog qhov no, qhov sib txawv ntawm conservative thiab nonconservative rog yog dab tsi?

Hauv physics, nws tseem ceeb heev kom paub qhov sib txawv ntawm conservative thiab nonconservative rog . Txoj haujlwm a conservative zog ua rau ntawm ib yam khoom yog txoj kev ywj pheej; txoj kev tiag tiag coj los ntawm cov khoom ua rau tsis muaj txawv . Yog txawv los ntawm zog ntawm kev sib txhuam, uas dissipates kinetic zog raws li cua sov.

Yuav ua li cas yog conservative thiab tsis conservative rog nrog piv txwv?

Piv txwv : cov zog ntawm lub ntiajteb txawj nqus thiab lub caij nplooj ntoos hlav zog yog conservative rog . Rau ib tsis yog - kev saib xyuas (los yog dissipative) zog , txoj haujlwm ua tiav los ntawm A mus rau B nyob ntawm txoj kev coj. Piv txwv : kev sib txhuam thiab cua tsis kam.

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