[填空题]
A cooling fan is turned off when it ecjo9 94*qc,yx o mta-m9fwi. is ohcyi2j)z m6 m ao;q0cu;4ls-1 n .tbfrunning at 850rev/min It turns 1500 revolutions bef 1n .ctjs ab)hc 2f;omzli6oyq0- m;u4ore 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
Post time 2025-2-18 20:00:22
