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1、Book2intheLightandMatterseriesoffreeintroductoryphysicstextbookswww.lightandmatter.comTheLightandMatterseriesofintroductoryphysicstextbooks:1NewtonianPhysics2ConservationLaws3VibrationsandWaves4ElectricityandMagnetism5Optics6TheModernRevolutioninPhysicsBenjaminCrowellwww.lighta
2、ndmatter.comFullerton,Californiawww.lightandmatter.comcopyright1998-2004BenjaminCrowelledition2.2rev.6thOctober2006ThisbookislicensedundertheCreativeCom-monsAttribution-ShareAlikelicense,version1.0,http://creativecommons.org/licenses/by-sa/1.0/,exceptforthosephotographsanddrawi
3、ngsofwhichIamnottheauthor,aslistedinthephotocredits.Ifyouagreetothelicense,itgrantsyoucertainprivilegesthatyouwouldnototherwisehave,suchastherighttocopythebook,ordownloadthedigitalversionfreeofchargefromwww.lightandmatter.com.Atyouroption,youmayalsocopythisbookundertheGNUFreeDo
4、cumentationLicenseversion1.2,http://www.gnu.org/licenses/fdl.txt,withnoinvariantsections,nofront-covertexts,andnoback-covertexts.ISBN0-9704670-2-8ToUriHaber-Schaim,JohnDodge,RobertGardner,andEdwardShore.BriefContents1ConservationofEnergy132SimplifyingtheEnergyZoo353Work:TheTran
5、sferofMechanicalEnergy494ConservationofMomentum755ConservationofAngularMomentum105AThermodynamics139Contents3Work:TheTransferofMe-chanicalEnergy3.1Work:TheTransferofMechanicalEnergy..............49Theconceptofwork,49.—Calculatingworkasforcemultipliedbydistance,50.—Machinescanin
6、creaseforce,butnotwork.,52.—Noworkisdonewithoutmotion.,52.—Positiveandnegativework,53.3.2WorkinThreeDimensions....56Aforceperpendiculartothemotiondoes1ConservationofEnergynowork.,56.—Forcesatotherangles,56.1.1TheSearchforaPerpetualMotion3.3VaryingForce.........58Machine........
7、......13R3.4ApplicationsofCalculus....611.2Energy............143.5WorkandPotentialEnergy....621.3ANumericalScaleofEnergy...183.6?WhenDoesWorkEqualForceHownewformsofenergyarediscovered,20.TimesDistance?..........651.4KineticEnergy.........233.7?TheDotProduct........67Energyandre
8、lativemotion,24.Summary.............681.5Power........
