[填空题]
A cooling fan is turneb j/3;o b/uasbd off fli.k5j k4yil.e fnle 6.b9 6owhen it is running at 850rev/min It turns 1500 revolutions before it comes to a stop.li j6ybin k6eflke 4..of 9.5l (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
