What is conical pendulum ? 

Def : conical pendulum is a simple pendulum which is given the motion such that Bob described horizontal circle and string describe a cone called as a conical pendulum


What is ideal simple pendulum ? 

It is defined as heavy point mass suspended by a weightless, iextensible string from rigid support called as ideal simple pendulum


What is practical simple pendulum ? 

It is defined as a metal sphere suspended by a light and inextensible string from rigid support