Advertisements
Advertisements
प्रश्न
Two bodies, A and B of equal mass are kept at heights 20 m and 30 m respectively. Calculate the ratio of their potential energies.
Advertisements
उत्तर
Let the equal mass of two bodies A and B be m.
Given : height h1 = 20 m
and h2 = 30 m
Potential energy of body A = mgh1
= m × g × 20
Potential energy of body B = mgh2
= m × g × 30
`"Ratio""P"_1/"P"_2=("m"xx"g"xx20)/("m"xx"g"xx30)=2/3`
APPEARS IN
संबंधित प्रश्न
What is nuclear energy?
Give one example of a body that has potential energy, in due to its state.
Give one relevant example for the following transformations of energy:
Chemical energy to heat energy.
State different forms of potential energy and give one example of each.
State the energy changes in the following case while in use:
an electric cell in a circuit
What is ocean? Explain in brief.
Identify the type of energy possessed by the body in each of the following:
(a) A coiled spring of the toy car
(b) A hammer which is raised
(c) A stone shot from a catapult
(d) Water stored in the overhead tank
(e) A tadpole moving in water.
Write the type of energy possessed in the following case:
A bent bow
State the energy changes which take place when:
A toy car spring is wound and car is made to run on level floor.
