Advertisements
Advertisements
Question
Write an expression for the potential energy of a body of mass m placed at a height h above the earth's surface. State the assumptions made, if any.
Advertisements
Solution
Expression for potential energy = mgh
Assumptions made :
- Potential energy on the ground is zero.
- The earth's gravitational potential energy increases and its force of attraction diminishes with increasing distance from the body's surface (i.e., the negative value of energy decreases).
RELATED QUESTIONS
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 ?
Name the type of energy (kinetic or potential) possessed by the following:
A moving bus.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving bus
Select the renewable and non-renewable sources of energy from the following:
Diesel
How is the solar energy used to generate electricity in a solar power plant?
What is nuclear energy?
Two bodies A and B of masses m and M (M ≫ m) have same kinetic energy. Which body will have more momentum?
What kind of energy is possessed in a situation when?
A fish moving in the water.
A boy sits and stands repeatedly. Draw a graph showing the variation of potential energy with time.
Ocean thermal energy is due to
