字典翻译 问答 小学 英语 两个英语关于动量和力矩的物理题老做不对Whatistheangularmomentumofafigureskaterspinning(witharmsinclosetoherbody)at3.5rev/s,assuminghertobeauniformcylinderwithaheightof1.5m,aradiusof16cm,andamas
问题标题：
两个英语关于动量和力矩的物理题老做不对Whatistheangularmomentumofafigureskaterspinning(witharmsinclosetoherbody)at3.5rev/s,assuminghertobeauniformcylinderwithaheightof1.5m,aradiusof16cm,andamas
问题描述：

两个英语关于动量和力矩的物理题老做不对

Whatistheangularmomentumofafigureskaterspinning(witharmsinclosetoherbody)at3.5rev/s,assuminghertobeauniformcylinderwithaheightof1.5m,aradiusof16cm,andamassof55kg.

1[_______]kg·m2/s

(b)Howmuchtorqueisrequiredtoslowhertoastopin5.0s,assumingshedoesnotmoveherarms?

2[_______]m·N

Acentrifugerotorrotatingat15000rpmisshutoffandiseventuallybroughttorestbyafrictionaltorqueof1.00m·N.Ifthemassoftherotoris4.80kganditcanbeapproximatedasasolidcylinderofradius0.0710m,throughhowmanyrevolutionswilltherotorturnbeforecomingtorest?

1[_______]rev

Howlongwillittake?

2[_______]s

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