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Work, Energy and Power
The energy acquired by the body due to its position in conservation field and/or configuration is called potential energy.
The examples of potential energy are:
(i) The potential energy stored in the stretched or compressed spring is elastic potential energy due to configuration.
(ii) The potential energy stored in the mass in gravitational field of the earth is an example of potential energy due to position of mass in gravitational field.
(iii) A charge placed in the electric field possesses potential energy. This potential energy is electric potential energy and is due to position of charged particle in electric field.
(iv) A wire when twisted stores potential energy due to configuration.
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By eating two apples, a person starts pushing the wall of room. If food value of apple is 100 calories per apple, how much work he will do in pushing the wall in one hour?
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