A rod of length l forming an angle theta...

A rod of length `l` forming an angle `theta` with the horizontal strikes a frictionless floor at A with its centre of mass velocity `v_(0)` and no angular velocity. Assuming that the impact at A is perfectly elastic. Find the angular velocity of the rod immediately after the impact.

`( 3 v cos theta)/( 2l)`

`( 12v cos theta )/( l ( 1+ cos^2) theta)`

`(12v cos theta)/( l ( 1+ 3 cos ^(2) theta)`

`(v cos theta )/(l ( 1+ cos^(2) theta))`

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