gc textbook chapter 8 Rotational Motion (id: a6ca3fb6b)

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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) A yo-yo is made of two solid cyli9e zw3hld50n vndrical disks, each o njzzn zvfd 2q.,qw8ogz 45r*9f mass 0.050 kg and diameter 0.075 m, joined by a (concentric) thin solid cylindrical hub of mass 0.0050 kg and diameter 0.010 m. Use conservation of engz5nzz9 o2.*qf,n j4 q 8vrdwzergy to calculate the linear speed of the yo-yo when it reaches the end of its 1.0-m-long string, if it is released from rest.    $m/s$
(b) What fraction of its kinetic energy is rotational?    %

参考答案:
空格1: 0.84±2%  空格2: 96±2% 


本题详细解析:

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