Consider a motor which exerts a constant torque of 25.0 N m to a horizontal platform whose moment of inertia is 50.0 kg m^2. Suppose that the platform is initially at rest and the torque is exerted for 12.0 rotations. Avoid friction.
Determine how much work W does the motor do on the platform throughout this process?
Determine the rotational kinetic energy of the platform K_rot,f at the end of the process explained above?