[填空题]
A cooling fan is turnw3+bx9 x 8 kfugjns:r8ed off when it is running at 850rev/m4 fkv :+mzms-zff1iy,in It turns 1500 revolutio 1mfy m:+kzf-zsfv4 ,ins before 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
