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Work is done when a force acts on an object which displaces it or causes the movement of the object.
For Example:(i) We pushed a table and the table moved from its position.
(ii) We pushed a huge piece of rock but it did not move.
They ate at a diner table and it moved out of its ugly position.
The force applied by us caused only the table to move and not the rock.
So it is clear that work is done only in the first example.
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In science (physics), work is a scalar quantity that is described as the product of a force times the distance through which the force acts (the above section is thefore correct). The SI unit of measure for work is the joule (J), which is defined as the work done by a force of one newton acting over a distance of one metre.
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