SAT II 物理常用公式总结

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1、更多SAT考试资料，请访问http://www.liuxue.la/SATII物理常用公式总结http://www.liuxue.la/SATIIPHYSICS1.1verVectorandForcestorque=forcelengthofmomentarmthesumoftheclockwisemoments=thesumofthecounterclockwisemomentsMotionandForces留学啦http://www.liuxue.la/更多SAT考试资料，请访问http://www.liuxue.la/distancecoveredaverag

2、espeed=timerequireddisplacementaveragevelocity=timedistancecovered=averagespeedtimeS=vtavchangeinvelocityacceleration=timerequiredforchangevvvfiattMotionwithconstantacceleration(startingfromrest)vv/2avfvatv()gtff1122SatS()gt2222v2(asv2gs)ffvaveragespeedavvfinalvelocityfaac

3、celerationtelapsedtimesdistancecoveredvvifvav2vvatfi12Svtati222vv2asfiFtchangeinmomentum=masschangeinvelocitymomentum=massvelocityCentripetalForce2vacr留学啦http://www.liuxue.la/更多SAT考试资料，请访问http://www.liuxue.la/2mvFcr2rvT24ra2TGravitationalFieldsGmm12F2rGMsvrWork,Ener

4、gy,SimpleMachinesworkforcedistancegravitationalpotentialenergy=wh=mgh12kineticenergy=mv22energyproduced=mcforceoffrictionduringmotioncoefficientofslidingfriction=normalworkagainstfriction=frictiondistanceobjectmoves12elasticpotentialenergy=kx2workpowertimeforcedistancepowertimeres

5、istanceactualmechanicaladvantage(AMA)=actualeffortFRAMA=FEworkoutput=resistancedistanceresistancemovesworkoutput=FRRRworkinput=effortdistanceeffortmovesworkinput=FSEE留学啦http://www.liuxue.la/更多SAT考试资料，请访问http://www.liuxue.la/Underidealconditionsthereisnouselesswork.Thenworkoutput=work

6、inputFSREIMA(idealmechanicaladvantage)FSERForamachineworkoutputefficirncy=workinputAMAidealeffortefficiency=IMAactualeffortweightofobjectlengthofplaneIMAidealeffortheightofplaneFluidMechanicsmassdensityvolumeForsolidsandliquids:densityofsubstancespgr..densityofwaterweight

7、ofsubstancespgr..weightofequalvolumeofwatermassofsubstancespgr..massofequalvolumeofwaterFPAPhdg(h=height,d=density)FhdgA2FA(diameteroflargepiston)IMA2fa(diameterofsmallpiston)Forasolidthatsinksinwater:weightinairspgr..apparentlossofweightinwaterForaliquid:apparent