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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 154
by Charles Hutton - 1831
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A Practical Treatise on Arithmetic, [etc.].

George Leonard - 1841
...MACHINES, OFTEN CALLED MECHANICAL POWERS. LESSON 194. There are usually reckoned six simple machines ; the lever, the wheel and axle, the pulley, the inclined plane, the Screw, and the wedge. The force that raises a weight, or overcomes a resistance, is called the power....
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The National Arithmetic ...: Combining the Analytic and Synthetic Methods ...

Benjamin Greenleaf - Arithmetic - 1841 - 314 pages
...The body which receives motion from another, is called the weight. The mechanical powers are five, the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Screw and the Wedge. LEVER. The lever is a bar, movable about a fixed point, called its fulcrum or...
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A Practical Treatise on Arithmetic ...: Combining the Useful Properties of ...

George Leonard - Arithmetic - 1841 - 340 pages
...MACHINES, OFTEN CALLED MECHANICAL POWERS. LESSON 194. There are usually reckoned six simple machines ; the lever, the wheel and axle, the pulley, the inclined plane, the tcrew, and the wedge. The force that raises a weight, or overcomes a resistance, is called the power....
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The North American Arithmetic: for advanced scholars. Part third

Frederick Emerson - Arithmetic - 1842 - 288 pages
...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 Wheel and Axle, the Pulley, the Inclined Plane, trie Wedge, and the Screw. The advantage gained by the use of the mechanical powers, does not consist...
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The Mechanic's Calculator: Comprehending Principles, Rules, and Tables in ...

William Grier - Mechanical engineering - 1842 - 308 pages
...other. 2. The simple machines, or those of which all others are constructed, are usually reckoned six : the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. To these the funicular machine is sometimes added. 3. The weight signifies the body to be moved, or...
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A Compendium of Natural Philosophy: Adapted to the Use of the General Reader ...

Denison Olmsted - Physics - 1842 - 360 pages
...the Egyptians. The elements of machinery are found in what are called the Mechanical Powers. They are six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Screw, and the Wedge. THE LEVEH. 117. The LEVER is an inflexible bar or rod, some point of which being...
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An Introduction to Mensuration and Practical Geometry

John Bonnycastle - Measurement - 1842 - 288 pages
...containing the principal problems in lirunton's Mechania: — that is, Falling Bodies,- the Pendulum.- tJie Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, end the Screw, which are usually called the six Mechanical Powert i Velocity of Wheels .- Steam Engine,-...
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Curiosities of Human Nature, Part 2

Samuel Griswold Goodrich - Biography - 1844 - 320 pages
...simplification or alteration. They are but six in number ; and the names by which they are distinguished are, the LEVER, the WHEEL AND AXLE, the PULLEY, the INCLINED PLANE, the WEDGE, and the SCREW. Out of the whole, or a part, of these, it will be found that every mechanical engine, or piece of machinery,...
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A Glance at the Physical Sciences, Or, The Wonders of Nature, in Earth, Air ...

Samuel Griswold Goodrich - Astronomy - 1844 - 352 pages
...simplification or alteration. They are but six in number ; and the names by which they are distinguished are, the LEVER, the WHEEL AND AXLE, the PULLEY, the INCLINED PLANE, the WEDGE, and the SCREW. Out of the whole, or a part, of these, it will be found that every mechanical engine, or piece of machinery,...
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The Student: a magazine of theology, literature, and science

1844
...machinery, produced by Ħin, however complex or intricate, each movement can be reduced to the influence of the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw, and even some of these are but compounded of others. There is a grand axiom to be considered in the...
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