gc textbook chapter 8 Rotational Motion (id: 7a2f77d66)

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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 person of mass 75 kg stands at the center of a rotating merrylxeg7fwe t u)-+sz/a 5-go-r7 u hh m2;5abxlu;nn:tkpyw7+ound platform of radius 3.0 m and moment 7 :5hw +2unxb y;utkn;hlpam7of 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.$KE_i$ =    J $KE_f$ =    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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