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## Potential energy

Different types of fuels store energy for doing work. This stored or hidden energy is called potential energy(P.E.)

• If a spring or rubber is stretched the spring will have potential energy. This is called elastic potential energy(or strain energy).
• If a load is raised above the ground, it will have gravitational P.E .

Gravitational potential energy can be calculated using the formula

Gravitational P.E= mass X gravitational field streght X height

P.E = m X g X h

Gravitational potential energy is energy an object possesses because of its position in a gravitational field.

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 Adam Said : There is some material about the pressure here http://physicsatweb.com/rev.php?id=Pressure 23/12/11 07:52 PM

 hermione felfel Said : the notes are really good but i cant find anything about pressure------------------------------------------------------------------------------------- Admin Replied: Consider reading the chapter "Pressure" 13/12/11 10:05 AM