[填空题]
A cooling fan is turned of f1;nl) mi)j.wmi g 6w7eprbn/f when it is running at 850rev/min It turnli c-h 3g0qzj;s 1500 revolutions be3zlq; jgc0i-hfore 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
