A uniform solid disk of mass M and radius R rotates about its central axis. If its angular speed is ω, what is its rotational kinetic energy? (Moment of inertia for a solid disk is I = 0.5MR²)
✓ Correct Answer: Option C
Rotational kinetic energy is given by KE_rot = 0.5Iω². For a solid disk, I = 0.5MR², so KE_rot = 0.5 * (0.5MR²) * ω² = 0.25MR²ω².