A hollow sphere of simple pendulum is first filled with mercury and then with water. The time periods are in the ratio of their densities are in the ratio `13.6 :1`

A hollow sphere of simple pendulum is first filled with mercury and then with water . The time periods are in the ratio if their densities are in the ratio 13.6:1

A hollow spherical pendulum filled with mercury has time period T. If mercury is thrown out completely, then the new time period

A hollow sphere is taken as bob of a simple pendulum. This hollow sphere is filled with fine sand. There is a small hole at the bottom of this sphere through which the fine sand leaks out. How does the time period of this simple pendulum alter? Discuss.

A hollow sphere is taken as bob of a simple pendulum. This hollow sphere is filled with fine sand. There is a small hole at the bottom of this sphere through which the fine sand leaks out. How does the time period of this simple pendulum alter? Discuss.