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 vertically on its tzgx9. pj g;0fkip. xtkfgf; 5 njn9+/znrahu/5-c It starts to fall and its lower end does not slip. What will be the speed of the upper end of the pole just before it hits the ground? [H5-h ru t9n cxn+nj //zga5f;kfint: Use conservation of energy.]    $m/s$

参考答案: 8.22±2%


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