[填空题]
A cooling fan is turned off when ip;;l.m5g c qbw rs*zv(t is running acc z-l)k:fz4qml am)l* - zsn2t 850rev/min It turns 1500 revolutions before it comes to a sz)l 2 czs4 lc-fk*alqnmz)m -: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
Post time 2025-2-18 20:00:22
