Lever vs Pulley - What's the difference?
lever | pulley |
(mechanics) 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.
# Specifically, 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.
A small such piece to trigger or control a mechanical device (like a button).
(mechanics) A bar, as a capstan bar, applied to a rotatory piece to turn it.
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(mechanics) An arm on a rock shaft, to give motion to the shaft or to obtain motion from it.
To move with a .
(figuratively) To use, operate like a .
To increase the share of debt in the capitalization of a business.
*
(obsolete) Rather.
* 1530 , , The Four PP
* 1537 ,
* 1590 ,
(rare) A levee.
* 1742 , Miss Robinson, Mrs. Delany's Letters , II.191:
* 2011 , Tim Blanning, "The reinvention of the night", Times Literary Supplement , 21 Sep 2011:
One of the simple machines; a wheel with a grooved rim in which a pulled rope or chain will lift an object (more useful when two or more pulleys are used together such that a small force moving through a greater distance can exert a larger force through a smaller distance).
In transitive terms the difference between lever and pulley
is that lever is to move with a lever while pulley is to raise or lift by means of a pulley.As an adverb lever
is rather.lever
English
(wikipedia lever)Etymology 1
From (etyl) leveor, ; see levant. Compare alleviate, elevate, leaven.Noun
(en noun)citation, passage=A doorknob of whatever roundish shape is effectively a continuum of levers , with the axis of the latching mechanism—known as the spindle—being the fulcrum about which the turning takes place.}}
Verb
- ''With great effort and a big crowbar I managed to lever the beam off the floor.
Derived terms
* leverage * compound lever * lever escapement * lever jack * lever watch * universal leverEtymology 2
From (etyl) comparative of of Germanic origin (compare German lieb) or lief.Adverb
(-)- for I had lever be without ye / Then have suche besines about ye
- Now therefore take my life from me, for I had lever die then live.
- For lever had I die than see his deadly face.
Etymology 3
From (etyl) lever.Noun
(en noun)- We do not appear at Phœbus's Levér .
- Louis XIV’s day began with a lever at 9 and ended (officially) at around midnight.
