What is an example of a wheel and axle that make work easier by reducing friction?

An example of a wheel and axle that reduces friction is a bicycle. The wheels allow the bicycle to roll smoothly over surfaces, significantly decreasing the friction between the tires and the ground compared to dragging. This design enables the rider to travel more efficiently and with less effort, as the rotating wheels minimize resistance. Additionally, the bearings used in the axle further reduce friction, enhancing overall performance.