a satellite doesnot need any energy to revolve around the earth, why?
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because there is no gravity to over come and the rotation is provided by the attraction between earth and sattilite it intuen provide centripetal force
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Satellites do need energy in order to get to the point where they can orbit, but do not need additionally energy when they get there for a good reason. ... The air molecules hit the molecules of the ball, taking away energy and slowing the ball down to a stop.
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