Fuels like coal and wood contain mechanical energy.

Define mechanical energy and law of conservation of mechanical energy. Prove conversion of gravitational potential energy in to kinetic energy by the help of law of conservation of mechanical energy. Also draw graph between energy and height.

Porous wood contains mainly

Give an example of mechanical energy

Are conservation of mass and conservation of mechanical energy fundamental laws of nature?

(a) What is mechanical energy ? (b) What kind of energy changes take place in the bodies of living beings, so as to produce mechanical energy.

In an electric fan, electrical energy changes into mechanical energy. True/False.

What are the two forms of mechanical energy?

What do you understand by the conservation of mechanical energy ? State the condition under which mechanical energy is conserved.

In the above problem, find total mechanical energy of the system .