Grade 9 Test on Mechanics 20241217 (id: 0ba896169)

[单选题]
A traffic light of weightbvw ty.x pjy8d yl38*4 100 N is suppor ppx+v0()na outed by two ropes as shown in Fig. 4-2. What are thea0v+u n()oppx tensions 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

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