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 vertica7+ciz+g :)zg+e vy5.fbk8ho rq kca x-lly on its tip. It starts to fall ;txoq 90ar/y nh8)bdp and its lower end does not slip. What will hpaxoty8rd 0;q)9/b nbe the speed of the upper end of the pole just before it hits the ground? [Hint: Use conservation of energy.]    $m/s$

参考答案: 8.22±2%


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