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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

## Systematic Education: Or Elementary Instruction in the Various ..., Volume 2

William Shepherd, Jeremiah Joyce, Lant Carpenter - Education - 1815 - 598 pages
...hundred different elementary works, the student goes on to the consideration of the mechanical powers, viz. the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw; since to these simple machines, all others, however complicated, may be reduced : we shall here describe...

## The Principles of Mechanics: Designed for the Use of Students in the University

James Wood - Mechanics - 1818 - 211 pages
...and by the combination of which, all machines, however complicated, are constructed. These powers are six in number, viz. the lever ; the wheel and axle...; the inclined plane ; the wedge ; and the screw. Before we enter upon a particular description of these instruments, and the calculation of their effects,...

## A Course of Mathematics for the Use of Academies, as Well as Private Tuition

Charles Hutton - Mathematics - 1822 - 680 pages
...resistances, than could be effected by the natural strength without them. These are usually accounted six in number, viz. the Lever, the Wheel and Axle,...Pulley, the Inclined Plane, the Wedge, and the Screw. THE LEVER. 16S 158 Mechanics, is the science of forces, and the effects they produce, when applied...

## A general view of the sciences and arts, Volume 1

William Jillard Hort - 1822 - 308 pages
...POWERS.' The simple machines, or mechanical powers, arc usually accounted to be the six following : — the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. A lever is an inflexible bar, or rod, moving freely round a point, called its fulcrum, or centre of...

## A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - Mathematics - 1825 - 372 pages
...and by the combination of which, all machines, however complicated, are constructed. These powers are six in number, viz. the lever, the wheel and axle,...pulley, the inclined plane, the wedge, and the screw. Before we enter upon a particular description of these instruments and the calculation of their effects,...

## Of mechanics and astronomy

Jeremiah Joyce - Science - 1825 - 314 pages
...were in vain to expect you to comprehend the principles of mechanics. There are six mechanical powers. The lever; the wheel and axle ; the pulley ; the inclined plane; the wedge; and the screw. Emma. Why are they called mechanical powers ? Father. Because, by their means we are enabled mechanically...

## The Operative Mechanic, and British Machinist: Being a Practical Display of ...

John Nicholson - Machinery - 1825 - 822 pages
...its origin solely to this cause. OF THE MECHANICAL POWERS. THE mechanical powers are six in number, the LEVER, the WHEEL and AXLE, the PULLEY, the INCLINED PLANE, the WEDGE, and the SCREW. A perfect knowledge and thorough appreciation of which should be clearly understood by those who purpose...

## The Christian Philosopher, Or, The Connection of Science and Philosophy with ...

Thomas Dick - Philosophy and religion - 1826 - 414 pages
...machines, the principles on which their energy depends ; the properties of the mechanical powers — the lever, the wheel and axle, the pulley, the inclined plane, the wedge and the screw — and the effects resulting from their various combinations. From the investigations of philosophers...