Category Archive: gravitational force

Sep 02

Why gravitational force of attraction is necessary for a satellite to revolve around earth?

The question was posted by Raj Kumar. The satellite has a velocity. To revolve around, the direction of velocity must change. In the absence of a force it can move only in a straight line. It is the gravitational force which helps the satellite top change direction and revolve around the earth. In other words, for a [...]

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