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Question 30310

JEE Physics · Medium

Rigid Body Dynamics: Rolling Kinetic Energy MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Rolling Kinetic EnergyMediumQuestion 30310

Question

A rolling body's total kinetic energy is:

A
½mv²
B
½Iω²
C
½mv² + ½Iω²
Correct
D
mv² + Iω²

Correct answer

½mv² + ½Iω²

Explanation

Total KE of rolling = translational KE + rotational KE = ½mv²_cm + ½Iω².

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