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Sources of energy!sources_of_energy2.htm;
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Renewable!renewableenergy.htm;
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Solar!solarenergy.htm;
Wind!windenergy.htm;
Geothermal!geothermalenergy.htm;
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Types of energy!types_of_energy2.htm;
Forms of energy!forms_of_energy2.htm;
Energy Conservation!conservation_of_energy2.htm;
Transformation of energy!transformation_of_energy3.htm;
Measurement of energy!measurement_of_energy4.htm;
Power!power1.htm;
Heat!heat1.htm;
Combustion Engine!Combustion engine1.htm;
Joule's Experiment!joule's experiment.htm;
Fun Facts!funfacts1.htm;
Work
Definition :
Work done on a body is defined as magnitude of force multiplied
by the distance moved by the body in the direction of applied
force.
Formula
:W=F*S
UNIT
: Work
is measured in joules (J). One
joule of work is done when a force of one newton (N) moves something through a distance of 1 m, in the direction of
applied force.
See
the diagrams A, B and C and calculate the work done.
Q:
A man
lifts book of mass 500 g to the shelf at a height of 2 m.
Calculate work done by him. (take
g=10 m/s2)
