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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

## Coal Miners' Pocketbook: Formerly The Coal and Metal Miners' Pocketbook ...

Thomas J. Foster - Coal mines and mining - 1916 - 1230 pages
...MECHANICS GENERAL LAW All machinery, however complicated, is merely a combination of six elementary forms, viz.: the lever, the wheel and axle, the pulley, the inclined plane the wedge, and the screw; and these six can be still further reduced to the lever and the inclined plane. They are termed mechanical...

## First Course in General Science

...expressed in numbers. 643. Simple and Compound Machines. — Six SIMPLE MACHINES are generally recognized: The LEVER, the WHEEL and AXLE, the PULLEY, the INCLINED PLANE, the WEDGE, and the SCREW. Most machines are COMPOUND MACHINES, ie, they are combinations of two or more of the simple machines....

## Bulletin, Issues 17-19

...machines would serve as a project from which one might well study the applications and advantages of the lever, the wheel and axle, the pulley, the inclined plane, the wedge and the screw. It occurred to me that a somewhat extended etudy at this point would prove valuable, so we decided...

## Science for Beginners: A First Book in General Science for Intermediate ...

Delos Falls - Science - 1917 - 408 pages
...matter how complex, are only combinations of a few very simple machines. These simple machines are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. The lever. The crowbar is a good example of a lever, the most commonly used of all machines. Notice...

## Proceedings of the High School Conference of November 1910-November 1931

High schools - 1918 - 378 pages
...machines would serve as a project from which one might well study the applications and advantages of the lever, the wheel and axle, the pulley, the inclined plane, the wedge and the screw. 314 ished them an abundance of applications of the simple machines. They never failed to have a good...

## Public School Methods, Volume 4

Teaching - 1918 - 688 pages
...together. These elements, to which the term mechanical powers is generally applied, are the level, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. Arouse an interest in these mechanical powers by such questions as these: Does a machine create power?...

## Science for Beginners: An Introduction to the Method and Matter of Science

Delos Fall - Science - 1918 - 410 pages
...matter how complex, are only combinations of a few very simple machines. These simple machines are the lever, the wheel and axle, the pulley, the inclined plane, the FIGS. 217, 218, and 219. The three classes of levers. wedge, and the screw. The lever. The crowbar...

## Science for Beginners: An Introduction to the Method and Matter of Science

Delos Fall - Science - 1918 - 410 pages
...matter how complex, are only combinations of a few very simple machines. These simple machines are the lever, the wheel and axle, the pulley, the inclined plane, the FIGS. 217, 218, and 219. The three classes of levers. wedge, and the screw. The lever. The crowbar...

## Science for Beginners: An Introduction to the Method and Matter of Science

Delos Fall - Science - 1919 - 408 pages
...matter how complex, are only combinations of a few very simple machines. These simple machines are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. The crowFIGS. 217, 218, and 219. The three classes of levers. The lever. bar is a good example of a...

## Everyday Science

William Henry Snyder - Science - 1919 - 618 pages
...simplified the doing of work. Among the machines which are used simply or in complex combinations are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. He has invented complex machines for transforming the energy of running water, of burning fuel, and...