A turnable platter has a radius of 0.150 m and is rotating at3.49 rad/s. When the power is shut off, the platter slows down andcomes to rest in 15.0 s, due to a net retarding torque ofmagnitude 6.20 X 10-3 Nm. Assume the platter to be auniform solid disk. Determine the mass of the platter.