[填空题]
A softball player sw a:wphoe7wg4am 0;n2 e xzt3d9 k6bi1pings a bat, accelerati k9. pk066r mqva8pgs6e gtl5ung it from rest to 3 $rev/s$ in a time of 0.20 s. Approximate the bat as a 2.2-kg uniform rod of length 0.95 m, and compute the torque the player applies to one end of it. $m \cdot N$