本题目来源于试卷: Circular Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
12.11: A girl twirls aw8pn:ooopdqjye3-87n1g1e a small mass conn 2fcpp;+c)r 9z 3gjmv 4o*qbeyected to the end of a string counterclockwise in a horizontal circle above her head. The figure shows an outline of the mass’s path viewed from above the twirling mass. If the girl needs the m 2v93jmgp;4 ) f*bpr +cze qyocass to pass through the point labeled P in the figure, at which lettered point on the path should she let go of the string?
A.
B.
C.
D.
E.
参考答案: B
本题详细解析:
暂无
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