A Bead on a Wire |
One simple way to model the motion of a roller coaster is to assume there is no friction, and that nothing rolls. This is analogous to thinking of a bead moving down a wire fixed in space. | |
We start with something simple: a straight line.
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A parabola: note the axes are not to scale.
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Getting a little more fancy, here's a cycloid.
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Joining two curves together, we have a Loop 'de Loop.
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Next we show a negative sine curve, computed two ways: | |
1.) with position as a function of time
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2.) using the Hamiltonian method
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The following graphic shows both sine approximations simultaneously
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As a finale, here's a 3-D track.
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Mathematica files: Line Parabola Cycloid Loop Sine 3-D track
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All content above relates to Math s45K, Roller Coasters: Theory, Design, and Properties, offered during Short Term 2005 at Bates College in Lewiston, Maine.