question_answer

Pendulum after some time becomes slow in modon and finally stops due to:

A) air friction                           

B) earth's gravity

C) mass of pendulum         

D) none of the above

Correct Answer: A

Solution :

Frictional force like air resistance opposes the motion of body, that is the oscillations,  because of which the amplitude of oscillations decreases and pendulum finally stops oscillating. This is known as damping.