問題詳情
10、 In Figure 10, a horizontal force of 500 N acts on a block of weight 1.5 kN placed on aninclined plane. The coefficients of friction between the block and the plane are0.25 μs=and0.20 μk =. What is the actual frictional force?
(A) 200N
(B) 500 N
(C) 300 N
(D) 450 N。
參考答案
答案：C
難度：困難0.375
統計：A(2),B(2),C(3),D(1),E(0)