Overweight and underweight (id: bf972272d)

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

[单选题]
94.25: One end of a mezrp7 kb;ebtt2bba2bg ( z/1w r76*g o znflm49s,*cu1xbg .qassless rope is attached to a mass m; the other end is attached to a mass of 1.00 kg. The rope is hung over a massless frictionless lmgf1xz9n 4 s,b*u.qcpulley as shown in the accompanying figure. Mass m accelerates downward at $5.0\;m/s^{2}$. What is m?

A. 3.0 kg
B. 2.0 kg
C. 1.5 kg
D. 1.0 kg
E. 0.5 kg


参考答案:  A


本题详细解析: 暂无

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