gc textbook chapter 8 Rotational Motion (id: 5d1b67c4f)

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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 4.2-m-diameter merry-go-round is).dxh1lxxo /k4 ;i ipg rotating freely withcc-lc) kd;7juo.w w ;h an angular velocity of 0.8 u;.)7ow ;wlkd ch-jcc $rad/s$ Its total moment of inertia is 1760 $kg \cdot m^2$ Four people standing on the ground, each of mass 65 kg, suddenly step onto the edge of the merry-go-round. What is the angular velocity of the merry-go-round now?    $rad/s$ What if the people were on it initially and then jumped off in a radial direction (relative to the merry-go-round)?    $rad/s$

参考答案:
空格1: 0.48±2%  空格2: 0.8±2% 


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