"A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a vertical axle during the center of the disk. The platform has a radius of 1.10 m and a rotational inertia of 486 kg * m^2about the axis of rotation. A 76.7 kg student walks slowly from the rim of the platform toward the center. If the angular speed of the system is 2.34 rad/s when the student starts at the rim, what is the angular speed when she is .332m from the center?"