1. In the figure, a uniform rectangular crate 0.40 m wide and 1.0 m tall rests on a horizontal surface. The crate weighs 1000 N, and its center of gravity is at its geometric center. A horizontal force F is applied at a distance h above the floor. If h = 0.8 m, what minimum value of F is required to make the crate start to tip over? (Static friction is large enough that the crate does not start to slide.)


(A) 500 N
(B) 750 N
(C) 250 N
(D) 625 N

(E) 1000 N

答案:登入後查看
統計: 尚無統計資料