NEET Physics Angular Acceleration MCQ Question
A uniform rod AB of length l and mass m is free to rotate about point A. The rod is released from rest in horizontal position. Given that the moment of inertia of the rod about A is ml²/3 the initial angular acceleration of the rod will be
2g/3l
mg/2
3g/2l
3g/2
Correct Answer
Detailed Explanation
Using τ = Iα and τ = mgl/2 for the rod, solving gives α = 2g/3l.
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