ME 212 Lecture Notes - Lecture 3: Bear-Resistant Food Storage Container, Angular Velocity, Contact Angle
Document Summary
In any system where a belt or a cable is wrapped around a pulley or some other cylindrical surface, we have the potential for friction between the belt or cable and the surface it is in contact with. In some cases, such as a rope over a tree branch being used to lift an object, the friction forces represent a loss. In other cases such as a belt-driven system, these friction forces are put to use transferring power from one pulley to another pulley. Figure use belts to transfer forces from one pulley to another pulley. : in many belt-driven systems, the belt friction keeps the pulley from slipping relative to the belt. For analysis, we will start a flat, massless belt passing over a cylindrical surface. If we have an equal tension in each belt, the belt will experience a non-uniform normal force from the cylinder that is supporting it.
