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प्रश्न
What is the difference between gravitational potential energy and elastic potential energy? Give one example of a body having gravitational potential energy and another having elastic potential energy.
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उत्तर
We can differentiate between gravitational and elastic potential energy as -
| Gravitational potential energy | Elastic potential energy |
| A body possesses gravitational potential energy if it is placed any height above the ground. (ground is considered as the refence level) | A body possesses elastic potential energy if its shape is changed by squeezing, pushing or pulling. |
| Gravitational force is responsible for this energy. | Elastic property of the body is responsible for this energy. |
Example:
(i) Gravitational potential energy - A book kept on a table possesses gravitational potential energy because of its position above the ground.
(ii) Elastic potential energy - The stretched rubber string of a catapult possesses elastic potential energy because of the change in shape of the string.
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संबंधित प्रश्न
State two factors on which the potential energy of a body at a certain height above the ground depends.
A body at a height possesses ______.
What happens to the potential energy of a body when its height is doubled?
On what factors does the gravitational potential energy of a body depend?
Give one example each of a body possessing : (i) kinetic energy, and (ii) potential energy.
When a ball is thrown vertically upwards, its velocity goes on decreasing. What happens to its potential energy as its velocity becomes zero?
A man is instructed to carry a package from the base camp at B to summit A of a hill at a height of 1200 metres. The man weighs 800 N and the package weighs 200 N. If g = 10 m/s2,
- how much work does man do against gravity?
- what is the potential energy of the package at A if its is assumed to be zero at B?
A car is accelerated on a levelled road and acquires a velocity 4 times of its initial velocity. During this process, the potential energy of the car :
If we increase the velocity of a car moving on a flat surface to four times its original speed, its potential energy ______.
The potential energy of your body is least when you are ______.
