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 cylindrical diskj8 etny kcw1 s+ w- xsn9rg2 i(+*.7kvjkb0dfps, each of mass 0.050 lb8e)pzf8p 6qtbx vp6t3)t.u(2rt fu 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 energy to calculate the linearf (t ulq626)88rp) bb tz3uft.extvpp 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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