gc textbook chapter 8 Rotational Motion (id: 9a560c41d)

本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 通用国际物理

[填空题]
A person of mass 75 kg stands at the center of a rotatm- ob8lp*:el) vfrm bbc9.tl *ing merry-goe tn )i nacp3og7:sn:v gi4z,* 6wbo-n-round platform of n ,6z o:gceg-itav3no7pnn)b si4:* wradius 3.0 m and moment of inertia 920 $kg\cdot m^2$ The platform rotates without friction with angular velocity 2 $rad/s$ The person walks radially to the edge of the platform.
(a) Calculate the angular velocity when the person reaches the edge.    $rad/s$
(b) Calculate the rotational kinetic energy of the system of platform plus person before and after the person’s walk.$K{E}_i$ =    J $K{E}_f$ =    J

参考答案:
空格1: 1.154±2%  空格2: 1800±2%  空格3: 1062±2% 


本题详细解析:

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