Machines are tools that make work easier. A lever is a simple machine. It helps to lift or move a heavy thing. People, and even some animals, use levers all the time. A lever can be made by resting a stick on a rock. It is a lot easier to push down than to lift up. A lever...
and I shall move the Earth with it" when he uncovered the physical principles behind the lever. While it would take a heck of a long lever to actually move the world, the statement is correct as a testament to the way it can confer a mechanical advantage. The famous quote...
bottom: a shovel lev·er (lĕv′ər, lē′vər) n. 1.A simple machine consisting of a rigid bar pivoted on a fixed point and used to transmit force, as in raising or moving a weight at one end by pushing down on the other. ...
Levor:Simple machine used to amplify physical force. 杠杆:用来增大力量得简单机械。 属类:工程技术-机械与工具- Thelevorrule applies in two-phase regions of tornary (as well as binary)systems 杠杆规律(除了二元体系之外)还适用于三元体系得二相区。
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lever The term 'lever' as it applies to the area of basic science can be defined as 'simple machine consisting of a rigid bar pivoted on a fixed point and used to transmit force, as in raising or moving a weight at one end by pushing down on the other'. ...
1.A simple machine consisting of a rigid bar pivoted on a fixed point and used to transmit force, as in raising or moving a weight at one end by pushing down on the other. 2.A projecting handle used to adjust or operate a mechanism. ...
machine. It is also known as the theoretical mechanical advantages or IMA. ◦ IMA = D E / D R , where D E equals the effort distance and D R equals the resistance distance, is the formula used to find the ideal mechanical advantage of a machine . Actual Mechanical Advantages ◦...
FSS: Hwi a lever gwir, benyn 'vas. langbot The billionaire industrialist with his grubby hands on the levers of power? OpenSubtitles2018.v3 However, presented separately, shift levers and cables are to be classified in subheading 8714 99 90 as parts. [image] EuroParl2021 However, thro...
1.A simple machine consisting of a rigid bar pivoted on a fixed point and used to transmit force, as in raising or moving a weight at one end by pushing down on the other. 2.A projecting handle used to adjust or operate a mechanism. ...