What is a wheel and axle?

The concept of a wheel and axle is foundational in mechanics and simple machines. It consists of two circular objects that rotate together, typically with one having a larger diameter than the other. The wheel is the larger circular part, while the axle is the smaller cylinder that it rotates around. When force is applied to the wheel, it causes the axle to turn. This arrangement allows for the efficient transfer of force, enabling the application of a smaller input force that can result in a larger output force, making tasks easier, such as moving heavy objects or vehicles.

This principle is what makes the wheel and axle an effective example of a simple machine that multiplies force, demonstrating the mechanical advantage that can be gained through the use of this basic design. The other descriptions do not accurately represent a wheel and axle; they refer to different mechanical systems and applications. Understanding this distinction helps in recognizing the specific role that wheels and axles play in machines and everyday applications.