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gc textbook chapter 8 Rotational Motion (id: e541292b3)

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admin 发表于 2024-12-19 16:20:21 | 显示全部楼层 |阅读模式
本题目来源于试卷: gc textbook chapter 8 Rotational Motion,类别为 通用国际物理

[问答题]
Two spheres look identical and have the same mass. Ho4ocp/ n7de3u:eg 0h qpbn2 ;powekenick tk./k+g 9+jwa4*w d52qlb.afver, one is hollow and the other is solidk.k5 2k ltedn k*fa4/b9q+ic+.ajwwg . Describe an experiment to determine which is which.




参考答案:
The two spheres would have different rotational inertias.  The sphere that is hollow will have a larger rotational inertia than the solid sphere.  If the two spheres are allowed to roll down an incline without slipping, the sphere with the smaller moment of inertia (the solid one) will reach the bottom of the ramp first.  See question number 13 for an explanation of why this happens.


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