gc textbook chapter 8 Rotational Motion (id: 7c508dc5b)

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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 cooling fan is turned off whenhyl0q 8,ip ;k:kkxfe7 itvmsuw u,;8zd(y0 k1 yl is running at 850rev/min It turns 1500 revolutions u (ludyvy,w80m s 1kz;before it comes to a stop.
(a) What was the fan’s angular acceleration, assumed constant?    $\frac{rad}{s^2}$
(b) How long did it take the fan to come to a complete stop?    s

参考答案:
空格1: -0.42±2%  空格2: 210±2% 


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