[填空题]
A softball player swings a baotiqslq7;si yvunsj,,nb+ (;ij/ s )2t, accelerba m3(x8tw ggc:i,8df ating 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. $m \cdot N$