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" These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. "
A Practical Treatise on Arithmetic ...: Combining the Useful Properties of ... - Σελίδα 246
των George Leonard (jr.) - 1841 - 340 σελίδες
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Rudimentary Dictionary of Terms Used in Architecture, Civil ..., Τόμοι 1-2

John Weale - 1850 - 590 σελίδες
...supposed to - be perfectly rigid. The mechanical powers, sometimes described as six in number, viz. the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw, are reducible to two only, viz. the lever and the inclined plane, in each of...

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

Daniel Adams - 1850 - 144 σελίδες
...to facilitate the moving of weights or the overcoming of resistance. They are six in number; viz., the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. In mechanical powers and in machinery, the thing to be moved, or the resistance...

A Theoretical and Practical Arithmetic: Designed for Common Schools and ...

Daniel Leach - 1851 - 280 σελίδες
...breadth at the beam ? MECHANICAL POWERS. SECTION XLVI. 394. THERE are six mechanical powers, viz., the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. 395. The lever is a bar, supposed to be inflexible, movable upon a fulcrum. 396. To find what weight...

A Compendium of Natural Philosophy: Adapted to the Use of the General Reader ...

Denison Olmsted - 1851 - 494 σελίδες
...friction? What ftre the methods of diminishing friction ? Specify the comparative amount of friction in the lever, the wheel and axle, the pulley, the inclined plane. the friction evidently exceeds the resistance ; otherwise they would not retain their position. 171. Friction...

Young Scientist: A Practical Journal for Amateurs, Τόμος 1

1851 - 716 σελίδες
...simple arrangements of which all machinery is compounded. Of these, six are generally distinguished: the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. All these, however, may strictly be reduced to two — the lever and the inclined...

Science simplified, and philosophy, natural and experimental, made easy

rev. David Williams (M.A.) - 1851 - 168 σελίδες
...branch denominated Statics will be the subject of the present inquiry. The mechanical powers are six: the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. The lever is the most powerful, because there is no limit to the difference of...

The principles and practice of statics and dynamics

Thomas Baker (C.E.) - 1851 - 168 σελίδες
...change the direction of any force. The mechanical powers are usually considered six in number ; — the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. The first three, when in a state of equilibrium, may be reduced to the lever...

Principles and Practice of Statics and Dynamics: Embracing a Clear ...

Thomas Baker - 1851 - 188 σελίδες
...change the direction of any force. The mechanical powers are usually considered six in number ; — the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw. The first three, when in a state of equilibrium, may be reduced to the lever...

Iconographic Encyclopaedia of Science, Literature, and Art, Τόμος 1

Johann Georg Heck - 1851 - 712 σελίδες
...simple arrangements of which all machinery is compounded. Of these, six are generally distinguished : the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. All these, however, may strictly be reduced to two — the lever and the inclined...

Village science; or, The laws of nature explained, by the author of 'Peeps ...

E W. P - 1851 - 262 σελίδες
...mechanical powers now, mamma ?" " Yes, I believe you may refer all sorts of mechanical contrivances to the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw, either separately or combined." "I will notice, mamma, and then whether I am...




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