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An uniform rod of mass m=30 kg and lengt...

An uniform rod of mass `m=30 kg` and length `l=0.80 m` is free to rotate about a horizontal axis `O` passing through its centre. A particle `P` of mass `M=11.2 kg` falls vertically through a height `h=36/245 m` and collides elastically with the rod at a distance `l/4` from `O`. at the instant of collision the rod was stationary and was at angle `alpha=37^(@)` with horizontal as shown in figure

Velocity of particle `P` after collision `(g=10ms^(-2))`

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