A bob of pendulum was filled with `Hg` and entire `Hg` is drained out, then the time period of pendulum

The bob of a pendulum is made of hollow brass sphere. What happens to the time period of the pendulum, if the bob is filled with water completely? Why?

A simple pendulum is made of bob which is a hollow sphere full of sand suspended by means of a wire. If all the sand is drained out, the period of the pendulum will

A simple pendulum is made of bob which is a hollow sphere full of sand suspended by means of a wire. If all the sand is drained out, the period of the pendulum will

For infinitely long length of the pendulum, the time period of the pendulum is

The matallic bob of a simple pendulum has the relative density rho . The time period of this pendulum is T it the metallic bob is immersed in water the new time period is given by

The matallic bob of a simple pendulum has the relative density rho . The time period of this pendulum is T it the metallic bob is immersed in water the new time period is given by