Advertisements
Advertisements
प्रश्न
Name the energy changes for the following:
pendulum
उत्तर
Potential energy into kinetic energy and vice-versa.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Energy possessed by a compressed spring is ______ energy.
Fill in the blank
The energy possessed by a body due to its motion is called ______ energy.
Name five different forms of energy.
A cyclist doubles his speed. How will his kinetic energy change: increase, decrease or remain same ?
A boy of mass m climbs up a staircase of vertical height h.
(a) What is the work done by the boy against the force of gravity?
(b) What would have been the work done if he uses a lift in climbing the same vertical height?
Name the form of energy which a body may possess even when it is not in motion. Give an example to support your answer.
State the energy changes which take place when:
During electrolysis.
A ball of mass 200 g falls from a height of 5 m. What will be its kinetic energy when it just reaches the ground? (g = 9.8 m s−2)
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)
The solar cooker is an application of the ______ energy of the sun, while solar cells, solar lamps are applications of the ______ energy of the sun.
