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 when it is5kjl:o+in h( nob1 y1pk nw*; 6f0fqrx runi;ezdcop6z+lm 9vvl7a 6 46oening at 850rev/min It turns 1500 revolutions before it comes to a s+;dzoz6 o7 i6v694elmcavlep top.
(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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