Advertisements
Advertisements
प्रश्न
Write an expression for the potential energy of a body of mass m placed at a height h above the earth's surface. State the assumptions made, if any.
Advertisements
उत्तर
Expression for potential energy = mgh
Assumptions made :
- Potential energy on the ground is zero.
- The earth's gravitational potential energy increases and its force of attraction diminishes with increasing distance from the body's surface (i.e., the negative value of energy decreases).
संबंधित प्रश्न
State two factors on which the kinetic energy of a moving body depends.
Give one relevant example for the following transformation of energy:
Electrical energy to mechanical energy.
A ball is made to fall freely from a height. State the kind/ kinds of energy possessed by the ball when it is just in the middle .
Name six different forms of energy?
Is it possible that a body may possess energy even when it is not in motion?
State the energy changes which take place when:
A body released from rest from the top of a building.
State the energy transformation on the following:
Electricity obtained from hydro energy.
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.
Find out the types of energy from the following puzzle.
Nuclear fission is
