The Pendulum and the Magnetic Connection

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When analyzing pendulum motion, textbooks avoid invoking centrifugal force. All upward acting forces are accounted for by the tension in the rod. This tension must however be greater in magnitude than gravity in order for a net upward force to be possible. The role of centrifugal force in both the simple pendulum and the conical pendulum will therefore be re-examined, and a connection with magnetic repulsion will be suggested.