Kev sib txhuam zoo li qub vs Kinetic kev sib txhuam
Kev sib txhuam zoo thiab kev sib txhuam kinetic yog ob hom kev sib txhuam. Kev sib txhuam yog lub tswv yim tseem ceeb heev thaum nws los txog rau kev ua haujlwm ntawm cov khoom siv lub cev. Kev sib txhuam yog suav tias yog ib qho ntawm cov laj thawj tseem ceeb ntawm cov khoom siv hluav taws xob poob. Yog li ntawd, kev nkag siab zoo hauv kev sib txhuam yog tsim nyog los tsim cov tshuab ua haujlwm kom txuag tau lub zog. Kev sib txhuam, txawm tias nws zoo li qub lossis kinetic, ua lub luag haujlwm tseem ceeb hauv peb lub neej niaj hnub. Yog tias tsis yog kev sib txhuam, peb tsuas yog tsis tuaj yeem taug kev lossis txawm tuav rab diav. Kev nkag siab txog kev sib txhuam yog ib qho tseem ceeb heev hauv kev lag luam xws li mechanical engineering, automobile engineering, physics and even life sciences. Hauv tsab xov xwm no, peb yuav tham txog qhov kev sib txhuam zoo li qub thiab kev sib txhuam kinetic yog dab tsi, lawv cov ntsiab lus, lawv tshwm sim li cas, lawv qhov zoo sib xws, dab tsi cuam tshuam rau static thiab kinetic kev sib txhuam thiab thaum kawg lawv qhov sib txawv.
Kev sib txhuam zoo li qub
Yuav kom nkag siab qhov kev sib txhuam zoo li cas yog ib qho yuav tsum xub nkag siab lub tswv yim ntawm kev sib txhuam tag nrho. Kev sib txhuam tuaj yeem tshwm sim hauv txhua qhov nruab nrab. Nws yog qhov kev tawm tsam ntawm cov xov xwm mus rau ib qho khoom txav txav, lossis ib qho khoom uas sim txav mus. Kev sib txhuam zoo li qub yog ib ntu ntawm kev sib txhuam qhuav. Thaum ob qho khoom siv kov ib leeg, muaj zog tiv thaiv kev sib txheeb ntawm ob lub ntsej muag. Qhov laj thawj tseem ceeb rau qhov kev tawm tsam no yog qhov tsis sib xws ntawm ob lub ntsej muag. Cov ntsej muag no muaj qhov siab me me ntawm qib microscopic. Thaum lub ncov ntawm ib qhov chaw nkag mus rau hauv lub hav ntawm lwm qhov chaw, cov khoom no zoo li kaw, txwv tsis pub cov txheeb ze. Yog tias ib qho khoom tso rau ntawm qhov chaw tiaj tus tau muab lub zog sib npaug rau lub dav hlau, qhov khoom yuav tsis txav mus. Qhov no yog vim muaj kev sib txhuam zoo li qub. Los ntawm lub hauv paus ntsiab lus ntawm lub zog sib npaug, qhov kev sib txhuam zoo li qub yog sib npaug ntawm lub zog siv. Kev sib txhuam qhuav muaj peb txoj cai tseem ceeb. Amonton thawj txoj cai hais tias lub zog ntawm kev sib txhuam yog ncaj qha proportional rau lub load thov. Amonton txoj cai thib ob hais tias lub zog ntawm kev sib txhuam yog ywj siab ntawm qhov chaw sib cuag. Txoj cai thib peb suav hais tias kev sib txhuam kinetic. Nws tuaj yeem tsim tau tias lub zog ntawm kev sib txhuam yog sib npaug ntawm lub zog ib txwm mus rau saum npoo lub sij hawm qhov proportionality tas li. Txawm li cas los xij, txij li kev sib txhuam yog sib npaug rau qhov kev siv quab yuam qhov proportionality tas li txawv nrog lub zog siv, qhov proportionality tas li hu ua coefficient ntawm kev sib txhuam. Muaj tus nqi siab tshaj plaws rau qhov kev sib txhuam zoo li qub, thiab yog li ntawd, nws yog qhov sib txhuam zoo li qub. Ib lub zog, uas ntau dua qhov siab tshaj plaws ntawm kev sib txhuam, yuav tsum txav cov khoom.
Kinetic Friction
Kinetic kev sib txhuam tshwm sim thaum ob qho khoom kov txav mus rau ib leeg. Txoj cai lij choj coulomb hais tias kev sib txhuam kinetic yog ywj siab ntawm qhov swb nrawm. Nws tau pom tias qhov kev sib txhuam kinetic yog me ntsis qis dua qhov siab tshaj plaws kev sib txhuam zoo li qub. Qhov no ua rau muaj qhov tsis txaus ntseeg thaum ib yam khoom pib txav mus los. Kev sib txhuam kinetic ntawm txhua qhov chaw yog ib txwm rov qab rau kev taw qhia ntawm kev txav mus los.
Dab tsi yog qhov txawv ntawm qhov sib txhuam zoo li qub thiab Kinetic Friction?
• kev sib txhuam zoo li qub tshwm sim thaum ob yam khoom nyob rau hauv kev sib raug zoo nrog ib leeg, tab sis kev sib txhuam kinetic tshwm sim thaum ob leeg txav nrog kev hwm.
• Kinetic kev sib txhuam tsawg dua qhov siab tshaj plaws kev sib txhuam zoo li qub.
• Kev sib txhuam zoo li qub tuaj yeem yog xoom, thaum kev sib txhuam kinetic tsis tuaj yeem ua tau zoo.
