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 bala;9fav)xo- 4+ 3zwapqu el nev;(6 j hhe)jromh,w9r k8nced vertically on its tip. It starts to fall and its lower end does not slip. What will be the speed of the upper end of the pole just mk,jhow9jh(h)8 e r6rbefore it hits the ground? [Hint: Use conservation of energy.]    $m/s$

参考答案: 8.22±2%


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