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No. 13 Spinning Ice.ppt
文档介绍:
No.13SpinningIcePourveryhotwaterintoacupandstiritsothewaterrotatesslowly.Placeasmallicecubeatthecentreoftherotatingwater.Theicecubewillspinfasterthanthewateraroundit.Investigatetheparametersthatinfluencetheicerotation.Reporter:JulianRonacherTeamAustriapoweredby:binationoftheorywiththeexperimentsReferencesTeamofAustria–Problemno.13–SpinningIce*Firstexperiments*TeamofAustria–Problemno.13–SpinningIceBasictheoryIcecubebeginstospinWaterrotationIcecubebeginstomeltHighwatertemperatureTornadoeffectConservationofmomentum*TeamofAustria–Problemno.13–elerated*TeamofAustria–Problemno.13–SpinningIceBasictheory*TeamofAustria–Problemno.13–SpinningIceBasictheory*TeamofAustria–Problemno.13–SpinningIceBasictheoryConservationofmomentumMassandradiusoftheicecubedecreaseAngularvelocityincreases*M=torsionalmomentL=angularmomentumΘ=momentofinertiaω=angularvelocitym=massoftheicecubeρ=densityoftheicecubeh=heightoftheicecubeM=torsionalmomentL=angularmomentumΘ=momentofinertiaω=angularvelocitym=massoftheicecubeρ=densityoftheicecubeh=heightoftheicecubeTeamofAustria–Problemno.13–SpinningIceMathematictheory*h=pletelycoveredwithwaterQ=heatenergyQhf=heatoffusiont=timeα=heattransmissioncoefficientR=radiusoftheicecubeh=heightoftheicecubeT=temperaturem=massoftheicecubeTeamofAustria–Problemno.13–SpinningIce 内容来自淘豆网www.taodocs.com转载请标明出处.