Physics – Mathematical Physics
Scientific paper
2006-12-15
Physics
Mathematical Physics
12 pages, 6 figures
Scientific paper
Consider a frictionless surface S in a gravitational field that need not be uniform. Given two points A and B on S, what curve is traced out by a particle that starts at A and reaches B in the shortest time? This paper considers this problem on simple surfaces such as surfaces of revolution and solves the problem two ways: First, we use conservation of mechanical energy and the Euler-Lagange equation; second, we use geometrical optics and the eikonal equation. We conclude with a discussion of the relativistic effects at relativistic velocities.
Gemmer Jochen
Nolan Matt
Umble Ronald
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