Brachistochrone on a velodrome



The Brachistochrone problem, which describes the curve that carries a particle under gravity in a vertical plane from one height to another in the fastest time, is one of the most famous studies in classical physics. There is a similar problem in track cycling, where a cyclist aims to find the trajectory on the curved sloping surface of a velodrome that results in the minimum lap time. In a recent paper [3], I extended the classical Brachistochrone problem to find the optimum cycling trajectory in a velodrome, treating the cyclist as an active particle. Starting with two canonical cases of cycling on a sloping plane and a cone, where analytical solutions were found, I then solved the problem numerically on the reconstructed surface of Velodrome de Montigny le Bretonneux in France, comparing with real cyclist data.







[3] Benham, G.P., Cohen, C., Brunet, E., Clanet, C. Brachistochrone on a velodrome. Proceedings of the Royal Society A (2020).[pdf]