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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

## Higher Arithmetic: Or, The Science and Application of Numbers; Combining the ...

James Bates Thomson - Arithmetic - 1847 - 422 pages
...the breadth 35 ft., and the depth 25 ft. ? MECHANICAL POWERS. 648. The Mecfianical powers are six, viz: the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. 649. When the pmtxr and weight, act perpendicularly to the arms of a straight,...

## Scientific Agriculture: Or, The Elements of Chemistry, Geology, Botany and ...

Miles M. Rodgers - Agriculture - 1848 - 296 pages
...and beautiful pieces of machinery which have ever been constructed. These few elementaiy powers are, the lever, the wheel and axle, the pulley, the inclined plane, the wedge and the screw. The lever is a straight bar placed upon a supporting point called a fulcrum, with the resistance which...

## Mathematics for practical men

Olinthus Gilbert Gregory - 1848 - 80 pages
...301 bs., to the same height. 3. The number of the mechanical powers is usually reckoned to be six : viz. the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screrc. 4. In treating of these machines, we use the word power, to denote the force which is supposed...

## Higher Arithmetic, Or, The Science and Application of Numbers: Combining the ...

James Bates Thomson - Arithmetic - 1848 - 422 pages
...ft., the breadth 35 ft., and the depth 25 ft. 1 MECHANICAL POWERS. G48. The Mechanical powers are six, viz: the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. 649. When the pi.wer and weight act perpendicularly to the arms of a straight...

## An Introduction to Mensuration and Practical Geometry

John Bonnycastle - Geometry - 1848 - 288 pages
...Powers are the most simple of mechanical applications to increase force and overcome resistance. They are usually accounted six in number, viz. The Lever —The Wheel and Axlt—The Pulley— The Inclined Plane — The Wedge — and the Screw. LEVER. To make the principle...

## An Introduction to Mensuration and Practical Geometry

John Bonnycastle - Geometry - 1848 - 288 pages
...Powers are the most simple of mechanical applications to increase force and overcome resistance. They are usually accounted six in number, viz. The Lever —The Wheel and Axle—The Pulley— The Inclined Plane — The Wedge— and the Screw. LEVER. To make the principle...

## The Modern Builder's Guide

Minard Lafever - Architecture - 1849 - 119 pages
...be effected by the natural strength without them. The simple machines, called Mechanical powers, are six in number ; viz. the lever, the wheel and axle,...pulley, the inclined plane, the wedge, and the screw ; and of these all the most compound engines consist. The general principle is, that the power or advantage...

## Mensuration, Mechanical Powers and Machinery: The Principles of Mensuration ...

Daniel Adams - Arithmetic - 1849 - 128 pages
...simple machines, employed to facilitate the moving of weights or the overcoming of resistance. They are six in number ; viz., the Lever, the Wheel and Axle,...Pulley, the Inclined Plane, the Wedge, and the Screw. In mechanical powers and in machinery, the thing to be moved, or the resistance to be overcome, is...