bn:00050864n
Noun Concept
Categories: Ancient inventions, Egyptian inventions, Mechanisms (engineering), Simple machines, Wikipedia articles incorporating a citation from the 1911 Encyclopaedia Britannica with Wikisource reference
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lever  first-class lever  Law of the lever  lever classes  Leverage
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A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. Wikipedia
Mechanical device to multiply force. Wikipedia Disambiguation
Simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum Wikidata
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. Wiktionary
WordNet 3.0 & Open English WordNet
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Wikipedia
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Wiktionary
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