The bar has a mass of 1.5 kg and a length of 25 cm, and is positioned in a smooth groove in the turntable, which is initially rotating at 400 rpm. the turntable has a radius of 30 cm, a mass of 15 kg and a radius of gyration of 20 cm. initially the midpoint of the bar is coaxial with the axis of rotation. if it is given a slight push, it will migrate to the edge of the turntable. determine the rotational velocity of the turntable when the end of the bar reaches the edge of the disc. ignore the effect of friction. 400 rpm