動量守衡和圓周運動的一題題目 - 運動
By Mary
at 2012-08-14T00:00
at 2012-08-14T00:00
Table of Contents
我只須選項B的解釋,麻煩各位幫幫我,謝謝如右圖所示,繩質量不計,繫住質量為m的物體後,穿過光滑桌子中央的小孔,繩另一端繫住另一個質量M的物體。當m以V的速率在光滑桌面作等速率圓周運動,此時繞轉的半徑為r,則下列敘述何者正確?(A)r=mV2Mg(B)當m做圓周運動的速率加倍,而M仍維持靜止,��
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運動
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By Megan
at 2012-08-16T19:52
at 2012-08-16T19:52
By Zora
at 2012-08-14T08:42
at 2012-08-14T08:42
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