Instantaneous Center of Rotation and Centrodes: Background and New Examples

Abstract

We review the concept of instantaneous center of rotation and its loci, the moving centrode and the fixed centrode, for the plane motion of an arbitrarily shaped rigid body. Then we recall a simple example from the literature. Finally, we present two new solutions pertaining to the motion of an elliptical lamina on a fixed plane, and of a stick moving on an oblique corner.