[填空题]
A cooling fan is turned ba xljbr1/ :(,v.g qgv;izjji1r2u8n off when it is rue8mzx; gply9iu) kym;df.* - )yyd.kc nning at 850rev/min It turns 1500 revolutiony.dpd;l-)mfyxgu)y9 m ie yk.*zck; 8s 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
