(II)A flexible chain of lenth L slides off the edge of
a frictionless table , as in Fig 5.57 . Initially
a lenth y hangs over the edge.(a)比較簡單不打了。
(b)Show that the velocity as the chain becomes completely
vertical is v=g(L-y*y/L)<===開根號(根號我打不出來..)
(This problem requires integration.)
囧囧囧囧囧囧囧 \
二二二二二二囧 |
||囧 |---y 這是圖Fig5.57
||囧 |
||囧 |
||囧 /
||
知道怎麼做幫忙回答一下(b)，謝謝。
另外...誰有Benson的姐達的電子檔阿~求助好心人士~~
謝謝。
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