[填空题]
A cooling fan is turned off w3 tbh3pm*ps)qhen it is running at 850rev/min It tur0i/ma0ln0fm*cs:p/tr qfw s0ns 1500 revolutio0fps0 qlc i/r:swm/a nt*0fm0 ns 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
