[填空题]
A cooling fan is turned of:un75z85cf.kd8 jb; xwh5 nuzbmw7qz f when it is running at 85 1xg + v,abts0ly2tzz-0rev/min It turns 1500 revolutionslt+z vxgy1a-0,bs z t2 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
