Rotational KEMediumQuestion 30323
Question
A wheel (radius 0.5 m, I = 0.5 kg·m²) rotates at 10 rad/s. Its rotational KE is:
- A5 J
- B25 JCorrect
- C50 J
- D12.5 J
Correct answer
25 J
Explanation
KE = ½Iω² = ½×0.5×100 = 25 J.
JEE Physics · Medium
Rigid Body Dynamics: Rotational KE MCQ
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