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

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A 2.30-m-long pole ib wc3usr zi,gn:4g./ xsoa iey;/l 7t-s balancedlgz *xldagl3zbd ch y:0/,7 d5 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 before it hits the ground? [Hint: Use conservation y3gd dgclxa70 , d*b 5h/lzl:zof energy.]    $m/s$

参考答案: 8.22±2%


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