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Onsite现场学术活动部分此卷共4题
但每题下分不同数量的小题
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Question 1
A sphere with radius r and moment of inertia
compresses a spring with spring constant k a distance x.

(a) How far must the spring be compressed so that the sphere rolls around the interior of a circular loop of radius R, depicted in the figure above, while always remaining in contact with the track? (10 points)
(b) In the case described in part (a) what height will the sphere reach at the end of the track? (5 points)
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