[填空题]
A 1.4-kg grindstone i 5ph++dxhrh 6 g4a(7qs6nvsw gnwkl k z:,s5:ol the shape of a uniform cylinder of radius 0.20 m acquires a rotational rate of :ko5 k l:zls,w from rest over a 6.0-s interval at constant angular acceleration. Calculate the torque delivered by the motor. $m \cdot N$