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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)

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1 J

10 J

100 J

1000 J

 



 

Work

Energy

Sources of energy

Types of energy

Forms of energy

Energy Conservation

Transformation of energy

Measurement of energy

Power

Heat

Combustion engines

Joule's experiment

Fun Facts

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