Two small bals A and B, each of mass m, ...

Two small bals A and B, each of mass m, are joined rigidlyl by a light horizontal rol of lengh L. The rod is clasmped at the centre in such a way that it c an rotate freely about a verticl axis through its centre. The systemis rotated with an angualr speed `omega` about the axis. A particle P of masss m kept at rest sticks to the ball A as the ball collides with it. Find the new angular speed of the rod.

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The correct Answer is:

A, B, C

Here Net torque =0 ltbrlt snce the angular momentum is conserved.
S, `I_1w_1=I_2w_2`

2mL^2.w=3mL^2w'`
`rarr w'=2/3w`

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