Question

Distinguish between natural and damped vibrations.

Answer 1

Sr. No.	Natural Vibrations	Damped Vibrations
1.	These vibrations occur in the absence of any resistive or frictional force (like in a vacuum).	These vibrations occur in the presence of a resistive or frictional force (like in air or water).
2.	The amplitude remains constant over time and never decreases.	The amplitude decreases continuously with time and finally, the vibrations stop.
3.	There is no loss of energy from the vibrating system to the surroundings.	The system continuously loses energy to the surroundings in the form of heat.
4.	Example: A simple pendulum vibrating in a complete vacuum.	Example: A simple pendulum vibrating in a room filled with air.