問題詳情

33. As shown in figures (a) and (b), a constant force F is applied to the two contact blocks in bothcases. In figure (a), block A pushes against block B with a 20 N force directed horizontally to theright. In figure (b), block A pushes against block B with a 10 N force directed horizontally to theleft. The total mass of two blocks is 12 kg. Which of the following statement is correct?(Gravitational acceleration g = 10 m/s2)


(A) The magnitude of F is 20 N.
(B) The mass ratio between block A and B is 2.
(C) The acceleration in (a) is 1.5 m/s2.
(D) The acceleration in (b) is 2.5 m/s2.
(E) The mass of block A is 8 kg.

參考答案

答案：D
難度：計算中-1
書單：沒有書單，新增