本题目来源于试卷: Rotational Motion，类别为 IB物理学
[问答题]
Two spheres look identud: e/85v q.zn0qbqc eical and have the same mass. However,;lq)3po;/ ojlk ss1yy3j j.q g one is hollow and the other is solid. Describe an experimey)j p j3.sl y1;3;/gslk qjoqont 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.
本题详细解析:
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