問題詳情
60. A roller coaster has mass of 500 kg when fully loaded with passengers shown in the figure on the right. When the coaster passes through the bottom of a circular dip with a radius of 40 m (as shown in the figure) at a speed of 16.0 m/s. What is the magnitude of the force of the track on the coaster at the bottom of the dip?
(A) 0
(B) 1700N
(C) 3200N
(D) 4900N
(E) 8100N
參考答案
答案：E
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中