gc textbook chapter 8 Rotational Motion (id: d5047fc16)

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本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 unclassified

[填空题]
A 2.30-m-long pole is balanced ve4klbrp dz5r )-rtically on its tip. It se k;vm7uq pe8b,6 rl9,n kb(bag1 ,vzzg.brr7tarts to fall and its lower end does not slip. What will be the speed of the upper end of the pole just before itb.qv6 ezz77 ;bebgbkg u1rv, rn( ,lmr ak9p,8 hits the ground? [Hint: Use conservation of energy.]    $m/s$

参考答案: 8.22±2%


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