問題詳情
39. On a bridge, a man (weight = 70 kg) plays bungee jumping by tying himself to one end of anelastic rope. The rope has a length of 100 m, and the height of the bridge is 500 m. After jumping,the man begins to bounce back 10 seconds later. What is the effective weight of the man at thebouncing point? (Gravitational acceleration g = 10 m/s2)
(A) 83 kg
(B) 95 kg
(C) 102 kg
(D) 117 kg
(E) 127 kg
參考答案
答案：E
難度：計算中-1
書單：沒有書單，新增