Work Energy and Power (id: 93eb82316)

本题目来源于试卷: Work Energy and Power，类别为 美国物理杯赛(Physics Bowl)

[单选题]
96.38: A pendulum bob massrvwd968xot ,b*nh6nl6 zdfq4 mon a cord length L is pulled sidewa1 5qe 0owd1bqfys until the cord makesf1d15eboq q0w an angle
θ with the vertical as shown in the figure to the right. The change in potential energy of the bob during the displacement is:

A. $ mgL (1 – cosθ) $
B. $mgL (1 – sinθ) $
C. $mgLsinθ$
D. $mgLcosθ$
E. $ 2mgL (1 – sinθ)$


参考答案:  A


本题详细解析: 暂无

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