Advertisements
Advertisements
Question
Can a body possess energy even when it is not in motion ? Explain your answer with an example.
Advertisements
Solution
Yes, a body possesses energy even when it is not in motion ;
Consider a body raised to a certain height say h. It its velocity is zero. Kinetic energy will be zero but the body will have.
P.E. = mgh
Thus, a body may possess energy even though it is not in motion.
APPEARS IN
RELATED QUESTIONS
Give one example of a body that has potential energy, due to its position at a height.
Give one relevant example for the following transformation of energy:
Electrical energy to mechanical energy.
Name six different forms of energy?
State two uses of solar cells.
A hydroelectric power station takes its water from a lake whose water level is 50 m above the turbine. Assuming an overall efficiency of 40%, calculate the mass of water which must flow through the turbine each second to produce power output of 1 MW. (Take g = 10 m s−2).
What kind of energy is possessed in a situation when?
A cocked up spring of air gun.
What kind of energy is possessed in a situation when?
A horse running along a level road
State the energy changes which take place when:
A battery lighting up a bulb.
For the same kinetic energy of a body, what should be the change in its velocity if its mass is increased nine times?
