wheel and axle: Quick Facts

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Diagram showing two types of wheel and axle arrangements: on the left, large and small interlocking gears labeled with force and radius; on the right, a system of pulleys and ropes demonstrating mechanical advantage.

A diagram displays six types of simple machines with labeled illustrations: inclined plane, wedge, screw, lever, wheel and axle, and pulley, each shown with real-world examples like ramps, axes, screws, seesaws, door handles, and pulleys lifting objects.

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axle Wheel machine simple machine screw pendulum lever pulley inclined plane wedge particle accelerator clock lubrication robot

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simple machine: The wheel and axle