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 disks, each of mass -u7 wxf /vno1,7 e*km 97s zsrmb,amxa0j .m9sw7 qlx(lzcyt.(. 9fig j1ocpv 0.050 kg and diameter 0.075 m, joined by a (concentric) thin solid cylindrical hub m.xc9(0 yjj wcg.t 1(vlzl9o sf.p7iq 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% 


本题详细解析:

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