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

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A cooling fan is turned off xu:z5ha ,(b/aou kmqj;( dh74; vyoai when it is runnix 42h nvyo38irng at 850rev/min It turns 1500 revolutions before it comes to a stophixr2yv4o 83n .
(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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