Atorsion pendulum is made from a disk of mass m = 7.1 kg and radius r = 0.71 m. a force of f = 42.4 n exerted on the edge of the disk rotates the disk 1/4 of a revolution from equilibrium.

 A torsion pendulum is made from a disk of mass m = 6.1 kg and radius R = 0.64 m. A force of F = 48.3 N exertedon the edge of the disk rotates the disk 1/4 of a ... torque needed to rotate the pendulum a fullrevolution from equilibrium? 3).