問題詳情

15. The motion of a particle connected to a spring is described by x = 10 sin πt. At what time (in s) is the potential energy equal to the kinetic energy?
(A) 0
(B) 0.25
(C) 0.5
(D) 0.86
(E) 1.0

參考答案

答案：B

統計：A:0,B:0,C:0,D:0,E:1

難度：計算中