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MathGroup Archive 2006

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Tautochonous oscillation physics simulation

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  • Subject: [mg71354] Tautochonous oscillation physics simulation
  • From: "Narasimham" <mathma18 at>
  • Date: Wed, 15 Nov 2006 06:45:21 -0500 (EST)

After seeing David Park's mechanics/physics program of elastic
collisions simulation. Why not model the tautochronous oscillations of
a particle on a cycloid of same time irrespective of height at start?
The dynamics ordinary differential equation has to be slightly modified
from energy/torque considerations of a particle of a non-linear

th''[t] + kappa * g * th[t] = 0 where th is normal-vertical direction
angle,kappa is cycloid curvature, with kappa*normal length =1/2,speed and acceleration can be computed and

It could be fun watching the dot going up and down the cycloid bowl, a
classical problem that engaged Huygens and Bernoulli, now using


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