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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 175
by Charles Hutton - 1807

## The Elements of Mechanics

James Renwick - Mechanics - 1832 - 560 pages
...being used singly. These simple machines are called the Mechanic Powers. 133. The Mechanic Powers are six in number, viz. : The Lever, the Wheel and Axle, the Pulley, the Wedge, the Inclined Plane, and the Screw. It has already been stated, that their properties may be...

## A Million of Facts: Connected with the Studies, Pursuits, and Interests of ...

Sir Richard Phillips - Encyclopedias and dictionaries - 1832 - 450 pages
...and La Grange. The mechanical powers may be reduced to three, but they are usually expressed as six, the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. In a single movable pulley the power gained is doubled. In a continned combination...

## Library of Useful Knowledge: Natural philosophy, Volume 2

Physics - 1832 - 640 pages
...instruments or elements of which every machine, however complicated, must be constructed : they are the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wdlge, and the Serete. MELTING POINT. That point of the thermometer which indicates the heat at which...

## Mechanics for Practical Men: Containing Explanations of the Principles of ...

James Hann, Isaac Dodds - Mechanics - 1833 - 234 pages
...weight, or overcome a great resistance, by a small force. The mechanical powers are usually accounted six in number, viz. the Lever, the Wheel and Axle,...Pulley, the Inclined Plane, the Wedge, and the Screw. i THE LEVEE. 35.- A Lever is an inflexible rod, moveable about a certtre of motion, or fulcrum, and...

## The millwright & engineer's pocket companion

William Templeton (engineer.) - 1833 - 224 pages
...help of the machine. The simple machines, usually called mechanic powers, are six in number, namely, the Lever, the "Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. There are three kinds of levers, caused by the different situations of the weights, props, and powers....

## On the Improvement of Society by the Diffusion of Knowledge: Or, An ...

Thomas Dick - Education - 1833 - 576 pages
...of a few bars of thin iron ?" And when we consider that all the mechanical powers may be reduced to the lever, the wheel and axle, the pulley, the inclined plane, the * Lord Brougham. wedge and the screw, how astonishing are the forces exerted, and the effects produced,...

## The North American Arithmetic: Part Third, for Advanced Scholars, Volume 3

Frederick Emerson - Arithmetic - 1834 - 300 pages
...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,...Pulley, the Inclined Plane, the Wedge, and the Screw. The advantage gained by the use of the mechanical powers, does not consist in any increase of the quantum...

## Mathematics for Practical Men: Being a Common-place Book of ... Pure and ...

Olinthus Gregory - Mathematics - 1834 - 480 pages
...indeed, are often employed separately, are called Mechanical Powers. Z. Of these we usually reckon six : viz. the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. To these, however, is sometimes added the funicular machine, being that which is formed by the action...