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
State two advantages of geothermal energy.
A ball is made to fall freely from a height. State the kind/ kinds of energy possessed by the ball when it is just in the middle .
What is meant by the renewable and non-renewable sources of energy? Distinguish between them giving two examples of weach.
Select the renewable and non-renewable sources of energy from the following:
Diesel
State two advantages of using wind energy for generating electricity.
Explain the principle of producing electricity using the nuclear energy.
A ball of mass 0.5 kg slows down from a speed of 5m/s-1 to that of 3m/s-1. Calculate the change in kinetic energy of the ball.
What kind of energy is possessed in a situation when?
A shooting arrow.
Give one example when:
Kinetic energy to potential energy.
The solar cooker is an application of the ______ energy of the sun, while solar cells, solar lamps are applications of the ______ energy of the sun.
