David Little  
Mathematics Department Penn State University Eberly College of Science University Park, PA 16802 
Office: 403 McAllister Phone: (814) 8653329 Fax: (814) 8653735 email:dlittle@psu.edu 



Cycloid
The Applet below draws three different trochoids. The parametric equations for the three curves are given as follows: y(θ) = R  Dcos(θ) The blue curve is a trochoid with D>R, the green curve is a trochoid with D=R (in this case the curve is called a cycloid) and the red curve is a trochoid with D<R.
© 2004 David P. Little Download this applet for offline viewing (includes source code) 