Atorsion pendulum is made from a disk of mass m = 5.2 kg and radius r = 0.65 m. a force of f = 46.6 n exerted on the edge of the disk rotates the disk 1/4 of a revolution from equilibrium.1)what is the torsion constant of this pendulum? 2)what is the minimum torque needed to rotate the pendulum a full revolution from equilibrium? 3)what is the angular frequency of oscillation of this torsion pendulum? 4)which of the following would change the period of oscillation of this torsion pendulum?