Video: Elastic muaj peev xwm ua tau dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Elastic muaj peev xwm zog yog zog khaws cia los ntawm kev siv lub zog los deform ib qho elastic khoom. Cov zog yog khaws cia kom txog thaum lub zog raug tshem tawm thiab cov khoom rov qab mus rau nws qhov qub, ua haujlwm hauv cov txheej txheem. Kev deformation tuaj yeem suav nrog compressing, ncab lossis twisting cov khoom.
Xav txog qhov no, dab tsi yog kev siv lub zog elastic zog?
Lub caij nplooj ntoos hlav yog siv khaws cia elastic muaj peev xwm zog nyob rau hauv ntau yam khoom siv (xws li cov shock absorbers hauv tsheb). Qhov no zog tuaj yeem yog siv nyob rau hauv ntau txoj kev txij li thaum lub caij nplooj ntoos hlav tuaj yeem nyob twj ywm hauv nws lub xeev compressed lossis stretched rau ncua sij hawm ntawm lub sij hawm tsis dissipating zog.
Tom qab, lo lus nug yog, yog elastic zog muaj peev xwm los yog kinetic? Kinetic zog yog zog nyob rau hauv ib yam khoom vim nws txoj kev txav. Piv txwv li, ib tug roj hmab band uas yog stretched muaj elastic muaj peev xwm zog , vim hais tias thaum tso tawm, cov roj hmab band yuav rov qab mus rau nws lub xeev so, hloov lub muaj peev xwm zog rau kinetic zog nyob rau hauv tus txheej txheem.
Ua kom pom qhov no, lub zog elastic zog txhais li cas?
Elastic Potential Zog . Elastic muaj peev xwm zog yog Muaj peev xwm zog khaws cia raws li qhov tshwm sim ntawm deformation ntawm ib qho elastic khoom, xws li stretching ntawm lub caij nplooj ntoos hlav. Nws yog sib npaug rau txoj haujlwm ua kom ncav lub caij nplooj ntoos hlav, uas nyob ntawm lub caij nplooj ntoos hlav tas li k raws li qhov kev ncua deb.
Dab tsi yog qhov txawv ntawm lub zog muaj peev xwm thiab elastic muaj peev xwm zog?
Muaj peev xwm zog yog zog uas yog khaws cia hauv a neeg los yog khoom. Gravitational muaj peev xwm zog nyob ntawm ib qho khoom hnyav thiab nws qhov siab tshaj hauv av (GPE = qhov hnyav x qhov siab). Elastic muaj peev xwm zog yog vim ib yam khoom lub cev. Nws tshwm sim thaum ib elastic khoom yog stretched los yog compressed.
Pom zoo:
Dab tsi yog chav tsev rau elastic muaj peev xwm zog?
Elastic muaj peev xwm lub zog yog khaws cia rau hauv lub caij nplooj ntoos hlav uas tau ncab los yog compressed los ntawm qhov deb x deb ntawm nws txoj hauj lwm sib npaug. Tsab ntawv k yog siv rau lub caij nplooj ntoos hlav tas li, thiab nws muaj cov units N / m. Zoo li txhua txoj haujlwm thiab lub zog, chav tsev ntawm lub zog muaj peev xwm yog Joule (J), qhov twg 1 J = 1 N∙m = 1 kg m2 / s2
Yuav ua li cas koj muab tau elastic muaj peev xwm zog?
Elastic muaj peev xwm lub zog yog lub zog muaj peev xwm khaws cia los ntawm ncab lossis compressing ib qho khoom elastic los ntawm lwm lub zog xws li ncab ntawm lub caij nplooj ntoos hlav. Nws yog sib npaug rau txoj haujlwm ua kom ncab lub caij nplooj ntoos hlav uas nyob ntawm lub caij nplooj ntoos hlav tas li k thiab qhov kev ncua deb
Dab tsi yog qhov txawv ntawm electrostatic muaj peev xwm thiab electrostatic muaj peev xwm zog?
Tsis muaj qhov sib txawv ntawm electrostatic potentialenergy thiab hluav taws xob (al) muaj peev xwm zog. Lub peev xwm hluav taws xob ntawm ib qho taw tes yog kev ua haujlwm los ntawm lwm qhov kev quab yuam hauv kev txav chav tsev zoo los ntawm ib qho arbitrarilychosen xoom ntawm lub peev xwm (feem ntau infinity) mus rau lub ntsiab lus
Puas muaj peev xwm hluav taws xob thiab lub zog muaj peev xwm tib yam Vim li cas lossis vim li cas ho tsis?
Lub zog muaj peev xwm hluav taws xob Ue yog lub zog muaj peev xwm khaws cia thaum cov nqi tawm ntawm qhov sib npaug (xws li lub zog muaj peev xwm gravitational). Lub peev xwm hluav taws xob zoo ib yam, tab sis ib tus nqi, Ueq. Ib qho hluav taws xob muaj peev xwm sib txawv ntawm ob lub ntsiab lus hu ua voltage, V = Ue2q−Ue1q
Puas muaj peev xwm equilibrium zoo ib yam li so muaj peev xwm?
Qhov sib txawv ntawm daim nyias nyias muaj peev xwm thiab qhov muaj peev xwm sib npaug (-142 mV) sawv cev rau lub zog hluav taws xob hluav taws xob uas tsav Na + mus rau hauv lub xovtooj ntawm lub peev xwm so membrane. Thaum so, txawm li cas los xij, qhov permeability ntawm daim nyias nyias mus rau Na + tsawg heev kom tsuas yog me me Na + xau rau hauv lub cell