Leverage is related to torque; leverage is a factor by which lever multiplies a force. The useful work done is the energy applied, which is force times distance. Therefore a small force applied over a long distance is the same amount of work as a large force applied over a small distance. The trick is converting the one into the other. The concept of torque in physics, also called moment or couple, originated with the work of Archimedes on levers. ... The principle of the lever tells us that the above is in static equilibrium, with all forces balancing, if F1D1 = F2D2. ... In physics, as defined by Asimov, a force is that which can impose a change of velocity on a material body. ... personal space, proxemics. ...

The simplest device for creating leverage is the lever. A lever is a stick which rests on a fulcrum near one end. When you push the long end of the stick down a long ways, the short end moves a small distance up with great force. With this device a man can easily lift several times his own weight. The principle of the lever tells us that the above is in static equilibrium, with all forces balancing, if F1D1 = F2D2. ... Fulcrum is the NATO reporting name of the MiG-29, a Soviet fighter aircraft. ...

Other common devices that achieve leverage include the wrench, various pulley arrangements, a jack, and hydraulic brakes. A wrench or spanner is a tool used to turn bolts, nuts or other hard-to-turn items. ... A pulley is a wheel with a groove along its edge, for holding a rope or cable. ... Jack can have several meanings: For electrical connectors, see Jack (connector). ...

Metaphorical use

The word leverage is also used with metaphorical meanings of the word force. Buyer Leverage relative to that of the seller in a transaction. In language, a metaphor is a rhetorical trope where a comparison is made between two seemingly unrelated subjects. ... Buyer leverage is the amount of bargaining power that buyers have when purchasing goods and services. ...