Solution of task 16.1.31 from the collection of Kepe OE

Solution of task 16.1.31 from the collection of Kepe OE

16.1.31
A homogeneous ball with a moment of inertia Iz = 4 kg • m2 rotates with an angular velocity? 0
= 4.5 rad / s. Determine the amount of time under the action of the torque Mz = 1.2 N • m
The angular velocity of the ball will double. (Answer 15)