Advertisements
Advertisements
प्रश्न
State different forms of potential energy and give one example of each.
What are the forms of potential energy? Give examples.
Advertisements
उत्तर
- Gravitational potential energy: The potential energy possessed by a body due to its position relative to the centre of Earth is called its gravitational potential energy.
Example: A stone at a height has gravitational potential energy due to its raised height. - Elastic potential energy: The potential energy possessed by a body in the deformed state due to change in its configuration is called its elastic potential energy.
Example: A compressed spring has elastic potential energy due to its compressed state.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
The energy possessed by a body due to its motion is called ______ energy.
State two factors on which the kinetic energy of a moving body depends.
Name six different forms of energy?
The following are some of the energy transformations.
A. Electrical to light
B. Work to heat
C. Chemical to light
D. Electrical to sound
E. Mechanical to electrical
Identify the energy transformation that takes place in the following by inserting the corresponding letter in the shape provided.
(i) A candle flame
(ii) A torch is lighted
(iii) A microphone is used in a meeting
(iv) A cycle dynamo
(v) A piece of metal is being filed
Calculate the decrease in the kinetic energy of a moving body if its velocity reduces to half of the initial velocity.
Obtain an expression for the potential energy of a body of mass m at a height h above the ground.
State the energy changes which take place when:
Burning of coal.
Give one example when:
Heat energy changes to kinetic energy.
Give one example when:
Electrical energy to heat energy.
Draw a diagram to show the energy changes in an oscillating simple pendulum. Indicate in your diagram how the total mechanical energy in it remains constant during the oscillation.
