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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

## The Kindergarten for Teachers and Parents

Kindergarten - 1917 - 592 pages
...as the only simple machines, but the simple mechanical powers have generally Ьееэ classified as the lever, the wheel and axle, the pulley, the inclined plane, the wedge, the screw. BEADS AS LAMPS After loading the train or car send it on its Journey but first place red,...

## A Treatise on Elementary Statics

John Greaves - Statics - 1888 - 302 pages
...suppose the machines perfect ones, ie with efficiency equal to unity. 133. The simple machines are, — the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Screw and the Wedge. The principle of the wheel and axle is the same as that of the lever, and the...

## Elementary Schools, how to Increase Their Utility: Being Six Lectures ...

William Bousfield - Education, Elementary - 1890 - 230 pages
...ancient and modern—Matter in motion—Force, inertia, friction, energy—The simple mechanical powers, viz. the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw ... ... ... 145 SCIENCE-TEACHING BY W. LANT CARPENTER, BA, B.Sc. SCIENCE-TEACHING I FEEL that it is...

## Elementary Schools, how to Increase Their Utility: Being Six Lectures ...

William Bousfield - Education, Elementary - 1890 - 232 pages
...modern — Matter in motion — Force, inertia, friction, energy — The simple mechanical powers, viz. the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw ... ... ... 145 O oq L_ CD H4 01 CD ' O O o NG B.Sc. do o H 5 O IU o (Xi • vn o 0 SCIENCE-TEACHING...

## The Boy's Modern Playmate: A Book of Sports, Games, and Pastimes

John George Wood - Acrostics - 1891 - 840 pages
...•velocities, and we find it exemplified in every machine. There are six simple machines, namely, the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. They are called the Six Mechanical Powers. Every machine, however complicated, is merely formed of...

## Object Lessons in Elementary Science: Following the Scheme Issued ..., Volume 3

Vincent Thomas Murché - Science - 1894 - 404 pages
...simple machines, can be grouped under six heads, and are spoken of as the mechanical powers. They are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. The lever, the pulley, and the inclined plane are the simplest of all, and are known as primary machines....

## School Physics: A New Text-book for High Schools and Academies

Elroy McKendree Avery - Physics - 1895 - 618 pages
...convert rapid motion into slow motion; eg, a crowbar. There are six simple ma- Fi °- 70 chines, — the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. power signifies the magnitude of the force that acts upon one part of the machine ; the weight signifies...

## School Physics: A New Text-book for High Schools and Academies

Elroy McKendree Avery - Physics - 1895 - 626 pages
...convert rapid motion into slow motion; eg, a crowbar. There are six simple ma- Fl °- 70 chines, — the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. power signifies the magnitude of the force that acts upon one part of the machine ; the weight signifies...