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Why does a satellite not need any fuel t...

Why does a satellite not need any fuel to circle around the earth? Is it possible to place an artificial satellite in an orbit such that it always visible in the sky of New Delhi ?

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1st part: The gravitational force between the earth and the satellite provides the necessary centripetal force to move around the earth. Also,this centripetal force acts normally with the direction of motion of the satellite . So,the work done is zero .So a satellite does not need any fuel to move around the earth.
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