A small putty ball of mass 2m is thrown horizonatally at a, Ask an Expert

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A small putty ball of mass 2m is thrown horizonatally at a rod of 3m and lenth L which pivots freely about about fixed axis throught one end . The puty ball is thrown with velocity v at the free end of the rod, to which it sticks ,

1) what is angular velocity of the rod after the putty sticky to it ?

2) which of following quatites of the ball plus rod system are conserved in this collisoin?

A kinectic energy
B Linear momentum
C neither

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