Question

Explain mechanism of pendulum with diagram​

Answer 1

A pendulum works by converting energy back and forth, a bit like a rollercoaster ride. When the bob is highest (furthest from the ground), it has maximum stored energy (potential energy).

Answer 2

A pendulum works on the principle of conservation of energy.

Working of a Pendulum:

• A pendulum of mass m initially at rest and at its equilibrium position requires an external force to come in motion.
• Due to the external force, the pendulum moves to a maximum of height h. This position is called the amplitude of the pendulum.
• At this position, the velocity of the pendulum= 0 i.e. its kinetic energy is 0.
• The potential energy is however maximum at the amplitude. PE=mgh
• When the pendulum comes back to the equilibrium position all of its PE converts to KE. So, PE= O and KE= max.
• The pendulum doesn't stop at the equilibrium due to its momentum and moves to its negative amplitude.
• The process will continue if no damping is present.