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gc textbook chapter 8 Rotational Motion (id: ec2d220d5)

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Post time 2025-2-18 20:00:22 | Show all posts |Read mode
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. 8–29 do a somerkif + 9x6)6fq.7bs z-gmdsqu esault without having any initsi 6sev 74su7+ y7p6ahpm zvg3ial rotation whengsieupz y7m+6 sv6p43v7as h 7 she leaves the board?





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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