 | Frederick Emerson - Arithmetic - 1839 - 300 pages
...signify the body to be moved and the body that moves it. THE LEVER. A lever is any inflexible bar, which serves to raise, weights, while it is supported at a point, which is the centre of its motion, by a ' "Jl fulcrum or prop. There are several kinds of lever used... | |
 | Joseph Gwilt - Architects - 1842 - 1114 pages
...OF THE LEVER. 12ГО. Tlic /erer is an inflexible rod, bar, or beam serving to raise weights, whilst it is supported at a point by a fulcrum, or prop, which is the centre of motion. To render the demonstrations relative to it easier and simpler, it is supposed to be void of gravity... | |
 | Jeremiah Joyce - Astronomy - 1852 - 606 pages
...called the first mechanical power. The lever is any inflexible bar of wood, iron, or other material, which serves to raise weights, while it is supported at a point by an immoveable prop or fulcrum, on which, as the centre of motion, all the other parts turn. — ab,... | |
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A LEVER is any inflexible rod, bar, or beam, which, serves to raise weights, while it is supported at a point by a fulcrum or prop, which is the centre of motion. The lever is supposed to be void of gravity or weight, to render the demonstrations easier... 
