Physics
Give an example to show the conversion of potential energy to kinetic energy when put in use.
Work, Energy & Power
38 Likes
Answer
Consider a ball placed at a height. It will have only potential energy and no kinetic energy.
If the ball is released from the height, it falls down and the vertical height of the ball from the ground decreases. Therefore, the potential energy decreases and it changes to kinetic energy due to which the speed of the ball increases. During the fall, the ball has both the potential energy and the kinetic energy. As the ball reaches the ground, the potential energy becomes zero and it changes entirely into kinetic energy.
The below figure shows the conversion of potential energy into kinetic energy during the vertical free fall of a ball at various positions A, B and C.
Answered By
27 Likes
Related Questions
A body of mass m is moved from ground to a height h. If force of gravity on mass of 1 kg is g newton, find:
(a) the force needed to lift the body,
(b) the work done in lifting the body and
(c) the potential energy stored in the body.
Can a body possess energy even when it is not in motion? Explain your answer with an example.
State the energy changes that occur in a watch spring while it unwinds.
A coolie is moving on a road with a luggage on his head. Does he perform work against the force of gravity? Give reason for your answer.