Parametric equation of a wheel moving on the X axis.

Description
The parametric equation of a wheel moving on the X axis is calculated. The position vector of a moving point on this wheel is discussed. Examples are given to show how to calculate position vectors of a point e.g. of a point on a cycloid with wheel radius one and moving with unit speed.
Prof. Denis Auroux, Maths, Fall 2007,18.02 Multivariable Calculus: 6: Kepler's Second Law, Massachusetts Institute of Technology: MIT OpenCourseWare),http://ocw.mit.edu (Accessed August 15,2011). License: Creative Commons BY-NC-SA:http://ocw.mit.edu/terms/#cc