Video: Kev siv dag zog yuam kev yog dab tsi?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Cov dag zog ntawm qhov deb ntawm 2 m los ntawm fulcrum tuaj yeem xam raws li. Fe = (1 kg) (9.81 m/s2) (1 m) / (2 m) = 4.9 N. A lever mechanism qhov twg cov tswv yim kev siv zog yog siab tshaj li qhov tso zis load yog feem ntau tus yam ntxwv raws li ib tug thib peb-chav kawm lever mechanism.
Tsis tas li ntawd, kev siv zog yog dab tsi?
A zog hu ua dag zog yog siv rau ntawm ib qho taw tes ntawm lub lever thiaj li txav tau ib yam khoom, hu ua qhov tsis kam zog , nyob ntawm qee qhov chaw ntawm lub lever. Ib qho piv txwv ntawm lub lever yog tus crow bar siv los txav ib yam khoom hnyav xws li pob zeb.
Tsis tas li ntawd, cov qauv rau kev ua haujlwm yog dab tsi? Cov ua haujlwm yog xam los ntawm kev sib npaug ntawm lub zog los ntawm tus nqi txav ntawm ib qho khoom (W = F * d). Lub zog ntawm 10 newtons, uas txav ib yam khoom 3 meters, ua 30 n-m ntawm ua haujlwm . Ib tug newton-meter yog tib yam li ib joule, yog li cov units rau ua haujlwm yog tib yam li cov zog - joules.
Kuj Paub, dab tsi yog tus qauv rau lub rubey?
Ntxig qhov nro thiab gravitational quab yuam koj nyuam qhuav xam rau hauv qhov qub kev sib npaug : -F = T + G = 18N + 88.2N = 106.2N. Lub zog yog qhov tsis zoo vim qhov khoom hauv lub rubey system yog accelerating upwards. Qhov tsis zoo los ntawm lub zog yog txav mus rau qhov kev daws teeb meem yog li F = -106.2N.
Mechanical Advantage formula yog dab tsi?
Cov mechanical kom zoo dua (MA) yuav yog qhov sib piv ntawm qhov kev ncua deb ntawm qhov kev siv quab yuam mus rau qhov pivot taw tes faib los ntawm qhov kev ncua deb ntawm qhov chaw thauj khoom mus rau qhov pivot. Cov mechanical advantage formula yog MA = D/d.
Pom zoo:
Qhov kev nplua rau kev dag dag dag yog dab tsi?
Txhua tus neeg thov lossis tus neeg sawv cev ntawm tus neeg thov uas paub tseeb thiab tsis kam ua cov lus tsis tseeb lossis sawv cev rau lub hom phiaj ntawm kev tau txais txiaj ntsig lossis them nyiaj raws li tshooj no yuav raug txim txhaum cai, thiab ntawm kev txiav txim siab yuav raug nplua tsis pub tshaj $ 10,000 , los ntawm kev kaw tsis pub tshaj
Dab tsi yog cov txiaj ntsig ntawm kev koom nrog tag nrho cov zej zog hauv kev npaj tawm dag zog?
Cov txiaj ntsig ntawm Tag Nrho Lub Zej Zog suav nrog kev paub ntau ntxiv, sib koom nkag siab txog kev pheej hmoo hauv zej zog, kev xav tau, thiab peev xwm; nce cov peev txheej los ntawm kev txhawb nqa cov tswv cuab hauv zej zog; thiab, thaum kawg, cov zej zog muaj zog dua
Txoj cai twg yog txhawm rau muab lub zog saib xyuas muaj zog ntxiv dag zog rau kev ua txhaum cai lij choj tiv thaiv kev ua phem thiab tiv thaiv kev lag luam nyiaj txiag?
COV PHOOJ YWG ACT TEEV NTUJ TEEB MEEM NTAWM TXOJ CAI TXOJ CAI TSHIAB
Kev siv dag zog ntsuas yog dab tsi?
Lub zog siv zog yog lub zog uas txav ib qho khoom hla mus los ntawm kev kov yeej lub zog tiv thaiv. Cov mis rau quab yuam yog quab yuam = loj x acceleration los yog F = MA thiab ntsuas nyob rau hauv newtons. Ib qho piv txwv ntawm kev siv zog quab yuam yog nqa cov leeg ntawm lub log tsheb uas muaj av
Vim li cas cov duab ntawm titration nkhaus txawv rau titration ntawm muaj zog acid vs muaj zog puag thiab qaug zog acid vs muaj zog puag?
Cov duab dav dav ntawm titration nkhaus yog tib yam, tab sis pH ntawm qhov sib npaug sib txawv. Hauv qhov tsis muaj zog acid-muaj zog titration, pH yog ntau dua 7 ntawm qhov sib npaug. Hauv qhov muaj zog acid-tsis muaj zog titration, pH tsawg dua 7 ntawm qhov sib npaug