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
What is the source of heat contained in geothermal energy?
Name five different forms of energy.
Name the type of energy (kinetic or potential) possessed by the following:
A bullet fired from a gun.
Name the physical quantity measured in terms of horse power.
State the energy changes in the following case while in use:
an electric toaster.
A metal ball of mass 2kg is allowed to fall freely from rest from a height of 5m above the ground.
What the kinetic energy of the ball just before it hits the ground ?
State two advantages and two disadvantages of using hydro-energy for producing electricity.
State the energy changes which take place when:
A bulb glows, when torchlight is switched on.
State the energy changes which take place when:
Photographic film is exposed to sunlight.
