A hollow, thin-walled sphere of mass 14 kg and diameter 46 cm is rotating about an axle through its center. The angle (in radians) through which it turns as a function of time (in seconds) is given by theta(t) = At^2 + Bt^4, where A has numerical value 1.2 and B has numerical value 1.5 1) At the time 3 s, find the angular momentum of the sphere.
2) At the time 3 s, find the net torque on the sphere.