問題詳情

38. A 1 kg copper block and a 6 kg steel block are connected by a light string overa frictionless pulley. The two blocks are allowed to move on a fixed steel blockwedge (θ = 60°) as shown in the figure. If the coefficients of friction of thecopper-steel and steel-steel are 0.4 and 0.6, respectively, what is theacceleration of the two blocks? (Gravitational acceleration g = 10 m/s2)


(A) 5.28 m/s2
(B) 5.08 m/s2
(C) 4.88 m/s2
(D) 4.68 m/s2
(E) 4.28 m/s2

參考答案

答案：E
難度：計算中-1
書單：沒有書單，新增