[填空题]
A softball player swings a barf0 gen (u*c(j7ol.;va 5xjlrt, accelerating it fro w1wp i(1pg;bom 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. $m \cdot N$