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Question

Physics Question on Rotation with Constant Angular ACceleration

A rod PQ of mass M and length L is hinged at end P. The rod is kept horizontal by a massless string tied to point Q as shown in figure. When string is cut, the initial angular acceleration of the rod is

A

3g2L\frac{3g}{2L}

B

gL\frac{g}{L}

C

2gL\frac{2g}{L}

D

2g3L\frac{2g}{3L}

Answer

3g2L\frac{3g}{2L}

Explanation

Solution

The correct option is (A): 3g2L\frac{3g}{2L}