A 108 g Frisbee is 30 cm in diameter and has about half its mass spread uniformly in a disk, and the other half concentrated in the rim. With a quarter-turn flick of the wrist, a student sets the Frisbee rotating at 560 rpm.
(a) What is the rotational inertia of the Frisbee?
kg·m2
(b) What is the magnitude of the torque, assumed constant, that the student applies?