問題詳情
18. 某物體受一力作簡諧運動，若其位置 x 與時間 t 的關係為 
，(t 之單位為秒，x 之單位為公尺)，則
(A) 簡諧運動振幅為 8 公尺
(B) 週期為
π 秒
(C) 最大速率為 1.6π 公尺／秒
(D) 物體運動到距平衡位置 4 公尺處，瞬時速度大小為
π 公尺／秒
(E)物體由距平衡點 34 公尺處，運動到距平衡點 4√ 3公尺處，最短需時 2.5 秒。
，(t 之單位為秒，x 之單位為公尺)，則 (A) 簡諧運動振幅為 8 公尺
(B) 週期為
π 秒 (C) 最大速率為 1.6π 公尺／秒
(D) 物體運動到距平衡位置 4 公尺處，瞬時速度大小為
π 公尺／秒 (E)物體由距平衡點 34 公尺處，運動到距平衡點 4√ 3公尺處，最短需時 2.5 秒。
參考答案
答案：A,C
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(0)
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