The distance between the point of suspension of the pendulum and the bottom of the bob is the length of a simple pendulum

What is the length of a simple pendulum ?

A hollow sphere field with water is used as the bob of a pendulum. Assume that the equation for simple pendulum is valid with the distance between the point of suspension and centre of mass of the bob acting as the effective length of the pendulum. If water slowly leaks out of the bob, how will the time period vary?

A nail is fixed at a point P vertically below the point of suspension 'O' of simple pendulum of length 1 m . The bob is released when the string of pendulum makes an angle 30^@ with horiozontal. The bob reaches lowest point and then describes vertical circle whose centre coincides with P . The least distance of P from O is

A nail is located at a certain distance vertically below the point of suspension of a simple pendulum. The pendulum bob is released from a position where the string makes an angle of 60^(@) with the vertical. Calculate the distance of nail from the point of suspension such that the bob will just perform revolutions with the nail as centre. Assume the length of the pendulum to be one meter.

What is the effect on the time period of a simple pendulum if the mass off the bob is doubled?

A simple pendulum oscillating with a small amplitude has a time period of T = 1.0s . A horizontal thin rod is now placed beneath the point of suspension at a distance equal to half the length of the pendulum. The string collides with the rod once in each oscillation and there is no loss of energy in such collisions. Find the new time period T of the pendulum

Kinetic energy of the bob of a simple pendulum is maximum