Scharnierbeweging
Scharnierbeweging refers to the type of motion that occurs around a fixed axis, similar to how a door opens and closes on its hinges. This movement is characterized by rotation, where all points on the moving object trace circular arcs around the axis of rotation. The object itself does not translate, meaning its center of mass does not change its position in space. In simpler terms, it's a turning motion.
Examples of scharnierbeweging can be found in many everyday objects and mechanical systems. A bicycle pedal