A uniform rod AB of mass m and length l ...

A uniform rod `AB` of mass `m` and length `l` is at rest on a smooth horizontal surface. An impulse `J` is applied to the end `B`, perpendicular to the rod in the horizontal direction. Speed of particlem `P` at a distance `(l)/(6)` from the centre towards `A` of the rod after time `t = (pi m l)/(12 J)` is.

`2 J/m`

`J/(sqrt(2)m)`

`J/m`

`sqrt(2) J/m`

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