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

[填空题]
A cooling fan is turned off when it is runnin6+g y7zwpqq0ezata *; g at 850rev/min It turns 150 swt 9wj tq1l;s.ze1u;0 revolutions before i ewqj t;sslwut9;1z. 1t 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% 


本题详细解析: