[填空题]
A 1.4-kg grindstone in the shape (/gnkwb, w; qtof a uniform cys0lvg/ktl s8+ linder of radius 0.20 m acquires a rotational rate of from rest over/klsvts0 +gl 8 a 6.0-s interval at constant angular acceleration. Calculate the torque delivered by the motor. $m \cdot N$