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The wheel and axle is a simple machine consisting of a wheel attached to a smaller axle so that these two parts rotate together in which a force is transferred from one to the other. The wheel and axle can be viewed as a version of the lever, with a drive force applied tangentially to the perimeter of the wheel, and a load force applied to the ...
An early wheel made of a solid piece of wood. A wheel is a rotating component (typically circular in shape) that is intended to turn on an axle bearing. The wheel is one of the key components of the wheel and axle which is one of the six simple machines. Wheels, in conjunction with axles, allow heavy objects to be moved easily facilitating ...
Strictly speaking, a shaft that rotates with the wheel, being either bolted or splined in fixed relation to it, is called an axle or axle shaft. However, in looser usage, an entire assembly including the surrounding axle housing (typically a casting) is also called an axle.
axle. wheel and axle, basic machine component for amplifying force. In its earliest form it was probably used for raising weights or water buckets from wells. Its principle of operation is demonstrated by the large and small gears attached to the same shaft, as shown at A in the illustration.
- The Editors of Encyclopaedia Britannica
An axle is a central shaft for a rotating wheel or gear. In some cases the axle may be fixed in position with a bearing or bushing sitting inside the hole in the wheel or gear to allow the wheel or gear to rotate around the axle.
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Wheels are often used in pairs, connected by a rod of wood or metal known as an axle. The wheel and axle turn together. The part of the wheel that attaches to the axle is called the hub. The wheel with an axle is the basis of many machines, not just vehicles.
The wheel and axle combination constitutes one of the so-called "simple machines" from which many more complex machines are derived. The principle of operation is essentially a lever , since it depends upon the effort force F e having a longer lever arm than the resistance force F r The ideal mechanical advantage is just the ratio of those ...