# What is the work done by the force of gravity on a satellite moving around the earth? Justify your answer.

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An object is moving in a circular path. On a complete revolution, the object will be at its initial position. So there is no displacement.

Therefore, displacement $d=0$

We know the formula for work done $\boxed{W=F.d}$

Here, $W\rightarrow$ work done

$F\rightarrow$ force acting on the body

$d\rightarrow$ displacement

If $d=0$,

Then, work done $W=F\times 0=0$

Therefore, the work done is zero. So the satellite moving around the earth in a circular orbit, and the work done is zero.

Updated on 10-Oct-2022 13:22:55