Newton’s Second Law for Rotation (Problem 86)

A flywheel ($I=50{\text{kg-m}}^2$) starting from rest acquires an angular velocity of 200.0 rad/s while subject to a constant torque from a motor for 5 s. (a) What is the angular acceleration of the flywheel? (b) What is the magnitude of the torque? Select the answer to part (a).