gc textbook chapter 8 Rotational Motion (id: ec2d220d5)

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本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 unclassified

[问答题]
Can the diver of Fig. 8–2p.o2 bb m9v0q g73wgpzq8in +x9 do a somersault without havpm/0a7ptr*p eztx/pxfsl ,+7d; r 8uding any initial rotation when she leaves the board +d*e8 rptu7/ a;p, zrtp/d7 fmlx0psx?

参考答案:

In order to do a somersault, the diver needs some initial angular momentum when she leaves the diving board, because angular momentum will be conserved during the free-fall motion of the dive.  She cannot exert a torque on herself in isolation, and so if there is no angular momentum initially, there will be no rotation during the rest of the dive.

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