Physics Unit4: Force Dynamics & Newton's Laws (id: 88b54564b)

本题目来源于试卷: Physics Unit4: Force Dynamics & Newton's Laws，类别为 通用国际物理

[单选题]
In Fig. 4-2, if the tqcom jr lv;/+8 c lk-ls3wh+rtrjm(4 4ensions in the ropes are 50 N, what is the mass ofhws/rc)dr,gs+w8u mw/f 9r-u the traffic lm)+ //-wdswc9sgur rhu,8wrf ight?

A. $3.1 \; kg$
B. $4.1 \; kg$
C. $6.1 \; kg$
D. $8.1 \; kg$


参考答案:  C


本题详细解析: 暂无

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