摘要：Previously we looked atcircular motion. Any object incircular motionis held at a fixed radius by acentripetal force. For a satelli

Previously we looked at circular motion. Any object in circular motion is held at a fixed radius by a centripetal force. For a satellite in orbit we need to consider where the centripetal force is coming from. We may also need to calculate the time period of an orbit or the speed of the moving object.

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