Advertisements
Advertisements
प्रश्न
Explain the types of mechanical energy.
Advertisements
उत्तर
The energy possessed by an object due to its position is called mechanical energy.
Mechanical energy can be classified into two;
- Kinetic energy
- Potential energy
- Kinetic energy: Energy possessed by a moving object is known as kinetic energy. It is also known as the energy of motion.
Eg: Moving car, cricket ball bowled by a player, bullet coming out of a gun. - Potential energy: Energy possessed by an object which is at rest is known as potential energy. It is also known as the store energy of position.
Eg: Objects lifted above, stone in the stretched rubber, water in the dam.
APPEARS IN
संबंधित प्रश्न
When a boy doubles his speed, his kinetic energy becomes
Two bodies of equal masses are moving with uniform velocities v and 2v. Find the ratio of their kinetic energies.
A truck weighing 1000 kgf changes its speed from 36 km h-1 to 72 km h-1 in 2 minutes. Calculate:
- the work done by the engine and
- its power (g = 10 m s-2)
On what factors does the kinetic energy of a body depend?
How fast should a man of 50 kg run so that his kinetic energy be 625 J?
What is the kinetic energy of a body of mass 1 kg moving with a speed of 2 m/s?
When a ball is thrown inside a moving bus, does its kinetic energy depend on the speed of the bus? Explain.
Find out the form of energy possessed by the following thing.
A rolling ball
When a bell fixed on a cycle rings, then the energy conversion that takes place is ______.
A ball of mass 0.5 kg slows down from a speed of 10 m s−1 to that of 6 m s−1. Calculate the change in the kinetic energy of the ball.
