問題詳情
7.A certain pendulum consists of a 1.5-kg mass swinging at the end of a string (length = 2.0 m). At thelowest point in the swing the tension in the string is equal to 20 N. To what maximum height abovethis lowest point will the mass rise during its oscillation? Take g = 10 m/s2
(A)77 cm
(B)50 cm
(C)63 cm
(D)33 cm
(E)95cm
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增