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प्रश्न
Give three examples of bodies possessing potential energy.
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उत्तर
(i) An object kept at a height above the ground.
(ii) A compressed spring, and
(iii) A stretched catapult.
संबंधित प्रश्न
Fill in the blank
The energy possessed by a body due to its motion is called ______ energy.
Name the form of mechanical energy, which is put to use.
What is a solar cell?
Name the energy changes for the following:
electric ball
State the energy changes which take place in Electricity is obtained from solar energy.
State the energy changes which take place when:
Photographic film is exposed to sunlight.
Give one example when:
Electric energy changes to sound energy.
For the same kinetic energy of a body, what should be the change in its velocity if its mass is increased nine times?
A body of mass m is taken from a height h to 2h. What is the increase in its potential energy?
A ball of mass 50 g falls from a height of 2m and rebounds from the ground to 1.6 m. Find:
(i) The potential energy possessed by the ball when initially at rest.
(ii) The kinetic energy of the ball before it hits the ground.
(iii) The final potential energy of the ball.
(iv) The loss in kinetic energy of the ball on collision. (Take: g = 10N kg−1)
