本题目来源于试卷: Physics Unit9: Static Equilibrium, Elasticity and Fracture，类别为 通用国际物理
[单选题]
A massless scaffold is held up by a wiauab4 /xq(z 3zb+zd1: x wqa k*+ha4osre at each end. The scaffold is 12 m lony flntbc: yrcs-c4//4gc f n4c4r btlysc://-y. A 300-N box sits 4.0 m from the left end. What is the tension in each wire?
A. left wire = 100 N; right wire = 200 N
B. left wire = 200 N; right wire = 100 N
C. left wire = 900 N; right wire = 2700 N
D. left wire = 2700 N; right wire = 900 N
参考答案: B
本题详细解析:
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