Newton's laws of motion in form of Riccati equation

Details Newton's laws of motion in form of Riccati equation Newton's laws of motion in form of Riccati equation

2001-10-23

arxiv.org/abs/physics/0110066v2

Phys.Rev. E65 (2002) 047602

Physics

Classical Physics

4 pages, twocolumn, accepted at Phys. Rev. E (2002)

Scientific paper

10.1103/PhysRevE.65.047602

We discuss two applications of Riccati equation to Newton's laws of motion. The first one is the motion of a particle under the influence of a power law central potential $V(r)=k r^{\epsilon}$. For zero total energy we show that the equation of motion can be cast in the Riccati form. We briefly show here an analogy to barotropic Friedmann-Robertson-Lemaitre cosmology where the expansion of the universe can be also shown to obey a Riccati equation. A second application in classical mechanics, where again the Riccati equation appears naturally, are problems involving quadratic friction. We use methods reminiscent to nonrelativistic supersymmetry to generalize and solve such problems

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