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
State the energy change in the following device while in use:
A glowing electric bulb.
What name is given to the heat energy obtained from hot rocks inside the earth?
A bucket full of water .is on the first floor of your house and another identical bucket with same quantity of water is kept on the second floor. Which of the two has greater potential energy ?
Give one relevant example for the following transformations of energy:
Chemical energy to heat energy.
State the energy changes in the following case while in use:
a ceiling fan
Name a device in which solar energy is converted into electricity state its two uses.
State the energy changes which take place when:
In a heat engine.
State the energy changes which take place when:
A magnesium ribbon burns in air.
State the energy changes which take place when:
A battery lighting up a bulb.
Give one example when:
Potential energy changes to electric energy.
