[填空题]
A cooling fan is turned )n+qhgi8hes6x 6ux;tf/+ idp off when;ky :j2/zzr +0 cwcmtd hf.m4s it is running at 850rev/min It turns 1500 revolutions b rkdw 2:ccmh;m0sf. +zjzt/4yefore 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
