[填空题]
A softball player swings a bat, accelerat w y2w/ky 2wb+a5doqb;ing it from r:inr cjzv*m (q88e ;xv pe9*e1uuckh+ est 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. $m \cdot N$