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Line 1: − '''Effort''' is the expenditure of physical and/or mental powers which are required to produce something worthwhile, often referring to hard [[work]], great [[insight]] or overcoming difficulty.+ − − It may also apply to the product of the work, so that a [[teacher]] may say "That essay was a great effort."'' − − In [[classical mechanics]], effort is the [[force]] or[[ energy]] that is applied to a [[machine]] for the accomplishment of useful work. − − [[Category:Dictionary]] − [[Category:Mechanics]]
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