A solid disk has moment of inertia

PHYSICS · Subjective · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

0.12\,\text{kg}\cdot\text{m}^2

. It is spun up from rest to an angular speed of

25\,\text{rad}\,\text{s}^{-1}

. Calculate the work that must be done on the disk.