 | 1850 - 772 σελίδες
...and La Grange. The mechanical powers may be reduced to three, but they are usually expressed as six, the lever, the wheel and axle, the pulley, the inclined plane, the screw, ana the wedge. In a single moveable pulley the power gained is doubled. In a continued combination... | |
 | 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... | |
 | John Weale - 1850 - 590 σελίδες
...are 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... | |
 | Thomas Dick - 1850 - 684 σελίδες
...of a few bars of thin iron ?" And when we consider that all the mechanical powers may be reduced to the lever, the wheel and axle, the pulley, the inclined plane, the wedge and the screw, how astonishing are the forces exerted, and the effects produced, by their various... | |
 | John Weale - 1850 - 600 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... | |
 | 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... | |
 | T. Baker - 1851 - 160 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... | |
 | Thomas Baker (C.E.) - 1851 - 176 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... | |
 | Denison Olmsted - 1851 - 492 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... | |
 | 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... | |
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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. 
