Advertisements
Advertisements
प्रश्न
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
उत्तर
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).
संबंधित प्रश्न
Fill in the blank
Energy possessed by a compressed spring is ______ energy.
Select the renewable and non-renewable sources of energy from the following:
Wood
Name five renewable sources of energy.
Name a device in which solar energy is converted into electricity state its two uses.
Give one example when:
Electric energy changes to mechanical energy.
What is the form of that graph between
(i) K.E. and velocity for a constant mass?
(ii) K.E. and mass for a constant velocity?
A body of mass m falls from a height h1 to a height h2, above the ground (h1 > h2). What is the loss of potential energy?
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A moving cricket ball
