Advertisements
Advertisements
Question
What are the uses of mechanical energy?
Advertisements
Solution
- In hydroelectric plants, the kinetic energy of water is converted into electrical energy.
- Windmills convert the kinetic energy of winds into electrical energy.
- The mechanical energy of the hammer is used to apply a force to a nail.
- Mechanical energy can bring a moving body to rest and make a body at rest move.
APPEARS IN
RELATED QUESTIONS
A ball of mass M is moving with a speed v. What is its kinetic energy?
A body falls freely under gravity from rest. Name the kind of energy it will possess on reaching the ground.
A man drops a 10 kg rock from the top of a 5 m ladder. What is its speed just before it hits the ground? What is its kinetic energy when it reaches the ground? (g = 10 m/s2)
What do you understand by the kinetic energy of a body?
When a ball is thrown inside a moving bus, does its kinetic energy depend on the speed of the bus? Explain.
Which of the following does not posses the ability to do work not because of motion?
Derive the formula for the kinetic energy of an object of mass m, moving with velocity v.
Explain the types of mechanical energy.
What is energy of motion? Give examples.
Find the kinetic energy of a body of mass 5 kg moving with a uniform velocity of 10 m s-1.
