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Video: Puas muaj peev xwm elastic zog tsis zoo?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Vim koj tab tom ua hauj lwm rau lub caij nplooj ntoos hlav, i.e. hloov zog rau nws, koj yuav nce lub muaj peev xwm zog khaws cia rau hauv nws. Ua kom paub meej txhais tias PE yog xoom thaum x = 0 tus muaj peev xwm muaj peev xwm yeej tsis yog tsis zoo.
Tsis tas li ntawd, puas muaj peev xwm elastic zog ib txwm zoo?
k yog lub caij nplooj ntoos hlav tas li thiab A yog qhov siab tshaj plaws hloov chaw, ces tus muaj peev xwm zog nyob rau hauv cov hauj lwm huab dhau los ua xoom kom qhov sib txawv tseem zoo li qub. Yog li muaj peev xwm zog vim lub caij nplooj ntoos hlav los yog vim muaj kev txwv tsis pub muaj zog tuaj yeem ua tsis zoo, xoom lossis zoo.
Tsis tas li ntawd, vim li cas kev ua haujlwm tsis zoo ntawm lub zog muaj peev xwm? 4 Teb. Thaum koj ua conservative ua haujlwm ntawm ib yam khoom, lub ua haujlwm koj ua yog sib npaug rau cov tsis zoo hloov hauv muaj peev xwm zog Wc = - ΔU. Lub ntiajteb txawj nqus ua ua haujlwm ntawm cov khoom los ntawm rub nws mus rau lub ntiaj teb, tab sis txij li thaum koj thawb nws mus rau lwm qhov kev taw qhia, lub ua haujlwm koj ua rau lub thawv (thiab yog li ntawd lub zog) yog tsis zoo.
Ib sab ntawm qhov no, lub zog muaj peev xwm ib txwm tsis zoo?
Nws gravitational muaj peev xwm zog xav rub nws los ze zog. Yog li txoj haujlwm ua los ntawm lub ntiajteb txawj nqus yog NEEGATIVE . Lub gravitational muaj peev xwm zog yog tsis zoo vim peb sim ua qhov opposite ntawm lub ntiajteb txawj nqus xav tau zoo zog.
Yuav ua li cas yog ib co piv txwv ntawm elastic muaj peev xwm zog?
Ntau yam khoom siv tau tsim tshwj xeeb los khaws lub zog muaj peev xwm, piv txwv li:
- Lub caij nplooj ntoos hlav caij nplooj ntoos hlav ntawm lub voj voog.
- Ib tug archer stretched hneev.
- Ib tug bent diving board, ua ntej ib tug divers dhia.
- Cov roj hmab twisted uas ua rau lub dav hlau ua si.
- Ib lub pob bouncy, compressed thaum lub sij hawm nws thaws tawm ntawm phab ntsa cib.
Pom zoo:
Puas yog lub zog gravitational zoo ib yam li lub zog muaj peev xwm?
Lub zog muaj peev xwm yog lub zog uas khaws cia rau hauv ib yam khoom lossis khoom siv. Gravitational muaj peev xwm zog yog lub zog nyob rau hauv ib yam khoom uas yog tuav nyob rau hauv ib tug ntsug txoj hauj lwm. Elastic muaj peev xwm lub zog yog lub zog khaws cia hauv cov khoom uas tuaj yeem ncab lossis compressed
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 elastic sib npaug rau lub zog kinetic?
Lub zog muaj peev xwm yog lub zog uas khaws cia hauv ib qho khoom. Piv txwv li, ib txoj hlua roj hmab uas ncab muaj zog elastic zog, vim hais tias thaum tso tawm, cov roj hmab band yuav rov qab mus rau nws lub xeev so, hloov lub peev xwm mus rau kinetic zog hauv cov txheej txheem
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