newnewnewnew (id: 2dbef6732)

本题目来源于试卷: newnewnewnew，类别为 IB物理学

[填空题]
For the system of Fig. 4-32 (f .kjsk04o eh:Examp4i xl,ty7a5f89x vu-otdrxw3le 4-20) how large a mass would box A have to have to prevent any motion fromfxr8wa 49x ,7 tdtlv5-y3oui x occurring? Assume $\mu_{\mathrm{s}}=0.30$ .   

参考答案: 6.7±2%


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