物體作圓周運動時,向心加速度(ae)與瞬時速度(v)的關係為 ,其中r為旋轉半徑。若時鐘上的秒針針尖作等速率圓周運動,秒針長度為10cm,則在0秒時秒針針尖的向心加速度大小為何? (A)0(B

問題詳情

4.物體作圓周運動時,向心加速度(ae)與瞬時速度(v)的關係為 ,其中r為旋轉

半徑。若時鐘上的秒針針尖作等速率圓周運動,秒針長度為10cm,則在0秒時秒針

針尖的向心加速度大小為何?

(A)0
(B)
(C)
(D)
(E)

參考答案

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