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" MECHANICAL POWERS are certain simple instruments employed in raising greater weights, or overcoming greater resistance than could be effected by the direct application of natural strength. They are usually accounted six in number; viz. the Lever, the... "
A Course of Mathematics: For the Use of Academies as Well as Private Tuition ... - Page 158
by Charles Hutton - 1831
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What Is Man?

John Hundley - 2003 - 154 pages
...fascinating machine exemplifying all the mechanical principles found in our modern factories. We find the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. These all cooperate harmoniously to perform the motions upon which our life and comfort depend. But...
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简明科技知识问答手册

Science - 2005 - 758 pages
...no matter how complicated, can be re duced to some combinations of six basic, or simple, machines. The lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw were all known to the ancient Greeks, who learned that a machine works because an "effort," which is...
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Mechatronics: Principles and Applications

Godfrey Onwubolu - Technology & Engineering - 2005 - 672 pages
...elementary mechanisms having the elements of which all machines are composed. Included in this category are the lever, the wheel and axle, the pulley, the inclined plane, the wedge and the screw. The similarity between machines and mechanisms is that: • they are both combinations of rigid bodies;...
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