[填空题]
A softball player swings a bat, accelesj*ot r6( tc, 7kq gks96q;phvrating it from 1oavl3e81e(kx,k+w.yj h c +e iph2osrest 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. $m \cdot N$