State and define the S.I. unit of work.
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The S.I unit of work is Joule.
1 joule of work is said to be done when a force of 1 newton displaces a body through a distance of 1 metre in its own direction.
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The work done by a fielder when he takes a catch in a cricket match, is negative. Explain.
What are the S.I. and C.G.S. units of work? How are they related? Establish the relationship.
Express joule in terms of erg.
Define the term energy and state its S.I unit.