本题目来源于试卷: Physics Unit9: Static Equilibrium, Elasticity and Fracture，类别为 国际高中通用物理
[单选题]
A steel lift column in a serv0wjpqe/u5 ykf.qhx (-g6e, wcice station is 4.0 m fzg2fwi3 i +za98up *l l l/nr7hjw1a;long and 0.20 m in diameter. Young's modulus for nhi1awgifuz7z ajr 93;fw 8+l 2/p*llsteel is $20 \times 10^{10} \; N/m^2$. By how much does the column shrink when a 5000-kg truck is on it?
A. $8.0 \times 10^{-7} \; m$
B. $3.2 \times 10^{-6} \; m$
C. $7.8 \times 10^{-6} \; m$
D. $3.1 \times 10^{-5} \; m$
参考答案: D
本题详细解析:
暂无
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