Circular Motion (id: f91fc71f5)

本题目来源于试卷: Circular Motion，类别为 美国物理杯赛(Physics Bowl)

[单选题]
94.15: A car is traveling on a road in hi uj7iyb a ou/l0:r;:bplly t,lb 2:q2 4brkddt ,tgq/fijo8 (fso- xerrain, see figure to the right. Assume the car has speed v and the tops and bottoms of the hills have radius of curvature R. The driver of the cas22(/l4t8oq,tdb qik xbrdf -,g:ofj r is most likely to feel weightless:

A. at the top of a hill when $v >\sqrt{gR}$
B. at the bottom of a hill when $v >\sqrt{gR}$
C. going down a hill when $v = \sqrt{gR}$
D. at the top of a hill when $v <\sqrt{gR}$
E. at the bottom of a hill when $v <\sqrt{gR}$


参考答案:  A


本题详细解析: 暂无

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