Two uniform solid spheres have the same mass of 2.15 kg, but one has a radius of 0.213 m while the other has a radius of 0.867 m. Each can rotate about an axis through its center.
(a) What is the magnitude F of the force that must be applied tangentially at the sphere's equator to provide that torque?
(b) What is the corresponding value of F for the larger sphere?