Verified Solution • 2025–26 Session moderate

QAIPMT-2006-Ph-2445: NEET 2006 Physics - Class 11 AIPMT-2006-Ph-2445 Solution: A uniform rod AB of length l and mass m is free to rotate about …

A uniform rod AB of length l and mass m is free to rotate about point A. The rod is released from rest in the horizontal position. Given that the moment of inertia of the rod about A is

ml^2/3

, the initial angular acceleration of the rod will be

Multiple Choice Options

A $\frac{mgl}{2}$
B $\frac{3}{2}gl$
C $\frac{3g}{2l}$
D $\frac{2g}{3l}$

Step-by-Step Verified Solution

Torque about A, _ = m g _ l 2 = m g l 2 _ = I _ _ Angular acceleration, _ = _ I = m g l / 2 m l 2 / 3 = 3 g 2 l

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