What is the work done by the gravity on a satellite moving round the Earth? Justify your answer.

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Detailed Solution

We have work done W= F. S= F S Cosθ

When a satellite moves around the Earth, then the direction of the force of gravity on the satellite is perpendicular to its displacement which means that θ = 90⁰

Cos 90⁰ = 0

Work done W=0

Hence the work done by the force of gravity on a satellite moving round the Earth is zero.

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