[填空题]
A 1.4-kg grindstone in the sh7 *qr +wly st1rp;d3ccape of a uniform cye * juq.j vmdx;x r-u-7-9yiqjlinder of radius 0.20 m acquires a rotational rate of from rest over a 6.0-s interval at constant angular acceleration. Calc97du-;eriquj.q j jmy-vx*- xulate the torque delivered by the motor. $m \cdot N$