Advertisements
Advertisements
प्रश्न
A body of mass m is taken from a height h to 2h. What is the increase in its potential energy?
Advertisements
उत्तर
Initial potential energy = mgh
Final potential energy = mg × 2h = 2mgh
Increase in potential energy = Final potential energy – Initial potential energy
= 2mgh – mgh = mgh.
संबंधित प्रश्न
Give one example of a body that has potential energy, in due to its state.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
A stretched wire
Select the renewable and non-renewable sources of energy from the following:
Diesel
What is a solar cell?
Explain the principle of generating electricity from hydro energy.
Write the type of energy possessed in the following case:
A wound-up spring
State the energy changes which take place when:
A body thrown vertically upwards from the ground.
Give one example when:
Kinetic energy changes to heat energy.
You do not have rangoli powder. What things can you use as an alternative?
The major problem in harnessing nuclear energy is how to
