A uniform semi circular ring of mass m i...

A uniform semi circular ring of mass m is placed on smooth horizontal surface and is free to rotate about an axis passing through point 'O' and perpendicular to the plane of the ring. A particle of same mass is striking the semi circular ring at other end, elastically as shown in the figure. find out angular velocity of the ring just after impact.

`(2u)/(3R)`

`(3u)/(2R)`

`(u)/(2R)`

None

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