Physics Unit4: Force Dynamics & Newton's Laws (id: 06de973bb)

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]
A traffic light of weight 100 N is supported by tweedmuk +p16 :io ropes a iiz ktir8ujz,a++72ys shown in Fig. 4-2. What are the tensj7 u8ri iy 2+atz,i+zkions in the ropes?

A. $50 \; N$
B. $63 \; N$
C. $66 \; N$
D. $83 \; N$


参考答案:  D


本题详细解析: 暂无

微信扫一扫，分享更方便