Behavior of a ball on the surface of a rotating disk

(Received 20 February 1992; accepted 29 June 1996)

Energy dissipation motion of a ball on a rotating disc (a turntable) has been considered. It is shown that the motion consists of two consequent stages - the motion towards the disk center along a cardioidic curve and the motion from the center along an unreeling helix. The limits of applicability of the results obtained are analyzed and qualitative comparison with experimental data is carried out

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