Work Energy and Power (id: 099f101c3)

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]
97.01: A force F directed qotwm4(1y1o9 zcgb7rm0d tsv)kq,a 3at an p *f94ssp*j vsangle of θ above the horizontal is used to pull a cratejfv ssp* *49sp a distance D across a level floor. The work done by the force F is

A. $FD$
B. $FD cosθ $
C. $FD sinθ $
D. $ mg sinθ $
E. $mgDcosθ$


参考答案:  B


本题详细解析: 暂无

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