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Short Description
A fulcrum is the support about which a lever pivots.
Full Description

A class 3 lever does not have the mechanical advantage of class-one levers and class-two levers, so examples are less common. The effort and the load are both on the same side of the fulcrum, but the effort is closer to the fulcrum than the load, so more force is put in the effort than is applied to the load.

A lever amplifies an input force to provide a greater output force, which is said to provide leverage. The ratio of the output force to the input force is the mechanical advantage of the lever.

A fulcrum is also known as the part of an animal that serves as a hinge or support. More details can be found here:

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