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 are μs =0.25 andμk = 0.20 . What is the actual frictional force?
(A) 200N
(B) 500 N
(C) 300 N
(D) 450 N。
(A) 200N
(B) 500 N
(C) 300 N
(D) 450 N。
參考答案
答案：C
難度：適中0.4
統計：A(0),B(3),C(2),D(0),E(0)
難度：適中0.4
統計：A(0),B(3),C(2),D(0),E(0)