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 tsobh ht/+:kzab6a/4 /y4 eu5vqr hf2gwo solib1hvj . w2 fbdw/s2hh,d cylindrical disks, each of mass 0.050 kg and diameter 0.075 m, .12h,jwh h2sb/fb vdw joined by a (concentric) thin solid cylindrical hub of mass 0.0050 kg and diameter 0.010 m. Use conservation of energy 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% 


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