Advertisements
Advertisements
प्रश्न
Explain the types of mechanical energy.
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
The energy of a flying kite is kinetic energy.
A body of mass 10 kg is moving with a velocity 20 m s-1. If the mass of the body is doubled and its velocity is halved, find:
- the initial kinetic energy, and
- the final kinetic energy.
A body is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy as its velocity becomes zero?
Write an expression for the kinetic energy of a body of mass m moving with a velocity v.
On what factors does the kinetic energy of a body depend?
Which would have a greater effect on the kinetic energy of an object : doubling the mass or doubling the velocity?
How fast should a man of 50 kg run so that his kinetic energy be 625 J?
When a ball is thrown inside a moving bus, does its kinetic energy depend on the speed of the bus? Explain.
What are the uses of mechanical energy?
What is energy of motion? Give examples.