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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 in Two Volumes for the Use of Academies as Well as ... - Page 145
by Charles Hutton - 1807

## Sir Edward Thomason's memoirs during half a century

Sir Edward Thomason - Medalists - 1845
...innumerable works written on these subjects into a small space, Mr. T. mentions the mechanical powers, the lever, the wheel and axle, the pulley, the inclined plane, the wedge and screw, the theory of friction, pressure, percussion, &c., and as much of their application to useful...

## A Manual of Natural Philosophy: Compiled from Various Sources, and Designed ...

John Johnston - Physics - 1846 - 314 pages
...machines or instruments, with which we are accustomed to raise weights and overcome resistances. They are six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, Quest. 113. What are the mechanical powers? How many of them are there ? Does each one of these act...

## Improvement to Palmer's Endless Self-computing Scale and Key: Adapting it to ...

John E. Fuller - Ready-reckoners - 1846 - 72 pages
...raise, through a less space, a weight heavier than itself. Power is gained at the expense of space, by the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. LEVER. Case 1. — When the fulcrum of the lever is between the power and the weight. 66 of leverage...

## A Compendium of Natural Philosophy: Adapted to the Use of the General Reader ...

Denison Olmsted - Physics - 1846 - 420 pages
...the Egyptians. The elements of machinery are found in what aie called the Meclumical Powers. They are six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Screw, and the Wedge. THE LEVEE. \$ 117. The LEVER is an inflexible bar or rod, some point of which...

## Outlines of Natural Philosophy: For the Use of Schools and Private Learners

C. List - Physics - 1846 - 176 pages
...the elements of which the compound are composed. They appear in six different forms, which are called the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. These are called the Mechanical Powers. We should be careful not to adopt the mistaken idea which is...

## A Technological Dictionary: Explaining the Terms of the Arts, Sciences ...

W. M. Buchanan - Science - 1846 - 768 pages
...constitutes the science of mechanics. The mechanical powers are usually divided into six classes ; the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw ; but all these are reducible to two, the lever and the inclined plane Some, however, regard the pulley...

## The American Arithmetic

James Robinson (of Boston.) - 1847 - 302 pages
...regulate moving power, or to produce motion so as to save time or force. The mechanical powers are six in number, viz. : the Lever, the Wheel and Axle,...Pulley, the Inclined Plane, the Wedge, and the Screw. The weight signifies the body to be moved, or the resistance to be overcome ; and the power is the...

## Welch's Improved American Arithmetic, Adapted to the Currency of the United ...

Oliver Welch - Arithmetic - 1847 - 292 pages
...through all the points. MECHANICAL POWERS. The Mechanical Powers in common use are sjx in number ; the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge and the Screw. The Weight is the body to be moved ; the Power is the body that moves it ; and the fixed point, which...