lever
Sign in to saveA 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 d
AI overview
A lever is a simple machine made from a rigid rod that pivots on a fixed point called a fulcrum, allowing it to rotate and lift or move objects. It works by amplifying the force you apply to it, so you can move or lift something heavier than you could with your bare hands alone.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Machine.name
- Lever
- Machine.image
- Palanca-ejemplo.jpg
- Machine.caption
- Levers can be used to exert a large force over a small distance at one end by exerting only a small force (effort) over a greater distance at the other.
- Machine.classification
- Simple machine
- Machine.components
- fulcrum or pivot, load and effort
- Machine.examples
- see-saw, bottle opener, etc.
via Wikipedia infobox
Article
10 sectionsContents
- Etymology
- Lever history
- Force and levers
- Types of levers
- Compound lever
- Law of the lever {{anchor|Law}}
- Virtual work and the law of the lever
- See also
- References
- External links
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.
== Etymology == The word "lever" entered English around 1300 from . This sprang from the stem of the verb lever, meaning "to raise". The verb, in turn, goes back to , itself from the adjective levis, meaning "light" (as in "not heavy"). The word's primary origin is the Proto-Indo-European stem , meaning "light", "easy", or "nimble", among other things. The PIE stem also gave rise to the English-language antonym of "heavy", "light".