Question Detail
Question
The rotational kinetic energy of a rigid body is given by which of the following formulas, where I is the moment of inertia and ω is the angular velocity?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Rotational kinetic energy is directly analogous to translational kinetic energy (½ m v²). By substituting moment of inertia I for mass m, and angular velocity ω for linear velocity v, the formula becomes KE_rot = ½ I ω².
Hint
Think of the similarity between linear motion (KE = ½ mv²) and rotational motion.