問題詳情

3’ I he cable shown in Fig. 3 has a mass of 1 .2kg per meter of length and supports the pulley and liTting liook, which together have a mass of 5.0kg. Determine the force P necessary to maintain equilibrium. (25%)

參考答案

答案:D
難度:簡單0.713235
統計:A(216),B(14),C(207),D(1843),E(1)

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