A wheel and axle is a simple machine consisting of a circular wheel attached to a central rod, or axle, that passes through its center. This configuration allows the wheel to rotate around the axle, enabling it to move or lift loads more efficiently than if the wheel were simply rolling on its own. The wheel and axle system can be found in various applications, including: 1. **Vehicles**: The most common example is in cars and bicycles, where wheels rotate around an axle to facilitate movement.
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