mechanical advantage


mechanical advantage

noun

Definition of MECHANICAL ADVANTAGE

:  the advantage gained by the use of a mechanism in transmitting force; specifically :  the ratio of the force that performs the useful work of a machine to the force that is applied to the machine

First Known Use of MECHANICAL ADVANTAGE

1852

mechanical advantage

noun    (Concise Encyclopedia)

Force-amplifying effectiveness of a simple machine (lever, wedge, wheel and axle, pulley, or screw). The theoretical mechanical advantage of a system is the ratio of the force that performs the useful work to the force applied, assuming there is no friction in the system. In practice, the actual mechanical advantage will be less than the theoretical value by an amount determined by the amount of friction.

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