I am trying to find the equation for the form that is in the picture. Basically it is an infinitely extending roller coaster loop. I just can not find the magic words in Google.
Any suggestions? What is it called? What is the equation?
2026-05-05 22:43:00.1778020980
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Graph of an infinitely extending rollercoaster loop
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You may want to try and stitch together a bunch of clothoids, which seem to be state of the art in rollercoaster design.
They are related to the Euler spiral, see http://en.wikipedia.org/wiki/Clothoid
The reference http://physics.gu.se/LISEBERG/eng/loop_pe.html may be of particular interest.
$(\cos(t)+\alpha t,\sin(t))$ for some $\alpha>0$ should work.
See a graph at http://www.wolframalpha.com/input/?i=parametric+plot+%28cos%28t%29%2Bt%2F2%2C+sin%28t%29%29%2C+t%3D-1..16