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Write two essential conditions for work to be done.
We know the expression for work done $\boxed{W=F\times d}$
Where $F\rightarrow$ Force acted upon the body
And $d\rightarrow$ displacement in the body
Thus, we find two essential conditions for the work done:
$( i)$. There must be a force to be acted on the body.
$( ii)$. There must be a displacement in the body.
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