Q. When a sphere of moment of inertia $I$ about its centre of gravity and mass $'m'$ rolls from rest down an inclined plane without slipping, its kinetic energy is
A) $\frac{1}{2}I\omega^{2}$
B) $\frac{1}{2}mv^{2}$
C) $I\omega + mv$
D) $\frac{1}{2}I\omega^{2} + \frac{1}{2}mv^{2}$
Explanation
(d) Sphere possesses both translational and rotational kinetic energy
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.