Halliday, Resnick & Walker — Rolling, Torque, and Angular Momentum: Problem 38

38 A sanding disk with rotational inertia \( 8.6 \times 10^{-3} \text{ kg} \cdot \text{m}^2 \) is attached to an electric drill whose motor delivers a torque of magnitude \( 16 \text{ N} \cdot \text{m} \) about the central axis of the initially stationary disk. About that axis and with the torque applied for \( 33 \text{ ms} \), what is the magnitude of the (a) angular momentum and (b) angular velocity of the disk?