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`
संबंधित प्रश्न
State the energy change in the following device while in use:
A glowing electric bulb.
Write true or false of the following statement.
The energy of flowing water can be converted into electric energy (electricity).
Give one example of a body that has potential energy, in due to its state.
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 .
Renewable source of energy is:
What kind of energy is possessed in a situation when?
A shooting arrow.
Write the type of energy possessed in the following case:
A falling apple
A ball of mass 200 g falls from a height of 5 m. What will be its kinetic energy when it just reaches the ground? (g = 9.8 m s−2)
Obtain an expression for the kinetic energy of a body of mass m moving with a velocity v?
What are the small particles that can be seen in a beam of light that enters a dark room?
