英语翻译Centrifugalforceprinciplesarealsousedincommonappliancessuchasclothesdryersandindevicestocontrolmotorspeedsandacceleratemovingmachines.Centripetalforcecausesanobjecttotravelincircularpath.Thisactioniscaus

　　英语翻译

　　Centrifugalforceprinciplesarealsousedincommonappliancessuchasclothesdryersandindevicestocontrolmotorspeedsandacceleratemovingmachines.Centripetalforcecausesanobjecttotravelincircularpath.Thisactioniscausedbythecontinuousapplicationofforces,whichtendtopulltheobjecttothecenter.Inotherwords,theinwardforce,whichresiststhecentrifugalforce,iscalledthecentripetalforce.Thecentripetalforceofobjectsspinningataconstantrateproducesanaccelerationtowardthecenterwhichisequalandoppositetothecentrifugalforce.Thematerialsusedintheconstructionofrapidlymovingmachinepartsandmechanismsmustbestructurallystrongenoughtoprovidethecentripetalforcerequiredtoholdthepartstoacircularpath.Atthesametime,thematerialsmustbeabletowithstandthecentrifugalforce,whichtendstopullthepartsapart.Motionandthebasiclaws,whichaffectmotion,areimportantconsiderationsbecauseofthenumerousapplicationsoftheseprinciplestoproduceworkthroughmechanicaldevices.Therearetwoprimarymechanicalmotions:rotaryandrectilinear.Thesetermssuggestthatrotarymotionisacircularmovementaroundacenterlineandrectilinearmotionisastraightlinemotion.Foreitherrotaryorrectilinearmotion,itispossible,withaddedmechanicaldevices,toproduceotherformsofmotionsuchasintermittentmotionandreciprocatingmotion.RotaryMotion:Themotionthatiscommonlytransmittedisrotarymotion.Thistypeofmotionmaybeproducedwithhandtoolsorpowertools.Rotarymotionisrequiredtodrillholes,turnpartsinalathe,millsurfaces,ordriveageneratororfanbelt.RectilinearMotion:Thefeedofatoolonalathe,thecuttingofsteelonapowersaw,ortheshapingofmaterialsareallsituationsinwhichrectilinearorstraightlinemotionproduceswork.Ineachofthesesituationsapartormechanismisusedtochangerotarymotiontostraight-linemotion.Thescrewofamicrometerandthethreadsinanutarestillotherapplicationswherethedirectionofmotionischangesfromrotarytorectilinear.HarmonicandIntermittentMotion:Anysimplevibration,suchastheregularback,andforthmovementoftheendofapendulum,issimpleharmonicmotion.However,manymanufacturingprocessesrequi