# After freezing a pendulum

**Classical Mechanics**Level 5

Case-1 : the water in the sphere is at \(5^\circ C\)

Case-2 : the water in the sphere is at \(-2^\circ C\)

Which of the following statements are true? [Neglect the expansion of volume of water on freezing]

A) Restoring torque in case 1 = Restoring torque in case 2.

B) Restoring torque in case 1 < Restoring torque in case 2.

C) Angular frequency for case 1 > Angular frequency for case 2.

D) Angular frequency for case 1 < Angular frequency for case 2.

E) Angular frequency for case 1 = Angular frequency for case 2.