[填空题]
A cooling fan is turned of+1jtjqt6)s ux8 g/ykdt ;,nvg,/qh-xaodld9. rxxz n0x8(xkf when it is running at 850rev/min It turns 1500 revolutions before it comes ta,0hzx x dxd8-l.nk/(rx qxo9 o 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
