A 50 kg runner runs around the edge of a turn table mounted on frictionless bearings. With respect to earth the velocity of runner is 2m`//`s.The turntable is rotating in opposite direction with an angular velocity of magnitude 0.2 rad`//`s with respect to earth.The radius of turntable is 4m, and its moment of inertia is 1000 `kg-m^(2)`. Find the final angular velocity of the system if runner comes to rest relative to turntable.