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Work is the application of force on a object in a particular direction. Its S.I unit is joule (J)
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Work is done whenever the given conditions are satisfied :
 A force acts on a body
A displacement takes place due to the force applied
 The SI unit is J (joule)
1 J is the amount of work done by a force 1 N on an object that displaces it through a distance of 1 m in the direction of applied force
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