A uniform bar of negligible cross sectional area of length 6a and mass 8m lies on a horizontal frictionless table. Two point masses m and 2m moving in opposite directions but in the same horizontal plane with speeds 2v and v respectively strike the bar at a distance a and 2a from one end and stick to the bar after the collision. Then, after the collision,
The moment of inertia of the bar with masses stuck to it about the axis passing through the centre of the bar and perpendicular to its plane is 30ma2