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Qué (quién) es lever - definición

SIMPLE MACHINE CONSISTING OF A BEAM OR RIGID ROD PIVOTED AT A FIXED HINGE, OR FULCRUM

Second-class lever; First-class lever; Fulcrum (mechanics); Third-class lever; Levers; Fulcrum (lever); Lever classes; Law of the lever; Leverage (mechanics)

lever

n.

1) (in a polling booth) to pull a lever

2) a gear lever (BE; AE has gearshift)

Lever

·adj More agreeable; more pleasing.

II. Lever ·adv Rather.

III. Lever ·noun A bar, as a capstan bar, applied to a rotatory piece to turn it.

IV. Lever ·noun An arm on a rock shaft, to give motion to the shaft or to obtain motion from it.

V. Lever ·noun A rigid piece which is capable of turning about one point, or axis (the fulcrum), and in which are two or more other points where forces are applied;

- used for transmitting and modifying force and motion. Specif., a bar of metal, wood, or other rigid substance, used to exert a pressure, or sustain a weight, at one point of its length, by receiving a force or power at a second, and turning at a third on a fixed point called a fulcrum. It is usually named as the first of the six mechanical powers, and is of three kinds, according as either the fulcrum F, the weight W, or the power P, respectively, is situated between the other two, as in the figures.

lever

['li:v?]

¦ noun a rigid bar resting on a pivot, used to move a load with one end when pressure is applied to the other.

?a projecting arm or handle that is moved to operate a mechanism.

¦ verb

1. lift or move with a lever.

2. move with a concerted effort: she levered herself up.

Origin

ME: from OFr. levier, leveor, from lever 'to lift'.

Wikipedia

Lever

A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load and effort, the lever is divided into three types. It is one of the six simple machines identified by Renaissance scientists. A lever amplifies an input force to provide a greater output force, which is said to provide leverage, which is mechanical advantage gained in the system, equal to the ratio of the output force to the input force. As such, the lever is a mechanical advantage device, trading off force against movement.

https://en.wikipedia.org/wiki/Lever

Ejemplos de uso de lever

1. For years, Connecticut used lever voting machines.

2. Then he reached up and flicked an imaginary lever.

3. Paresh Rawal and Johny Lever contribute to some good comedy.

4. Johny Lever is monotonous and Presh Rawal exhibits nothing new.

5. Lever, had the only charge against him, assault, dismissed.