 | Leonard Dunnell Gale - Physics - 1838 - 308 pages
...as long to lift it through the same H»ce. LXXII. There are usually reckoned six mechanical powers : the lever ; the wheel and axle ; the pulley ; the inclined plane ; the wedge ; and the screw. THE LEVER. LXXIII. THE LEVER is a bar of iron or wood, supported by and moveable on a round centre... | |
 | Leonard Dunnell Gale - Physics - 1838 - 280 pages
...of. 36 length of. 37 expansion of. 37 gridiron............... 37 MECHANICAL POWERS. Mechanical Powers The Lever The Wheel and Axle The Pulley The Inclined Plane The Wedge ..... 38 38 43 45 47 60 The Screw .......................... 60 GENERAL REMARKS. Friction. HYDROSTATICS.... | |
 | Thomas Dick - Philosophy and religion - 1838 - 690 pages
...bars of thin iron ?" And when we consider that all the mechanical powers may be reduced t'i the /ever, the wheel and axle, the pulley, the inclined plane, the wedge and the «crew, how astonishing are the forces exer'ed, and the effects produce J, by their various combinations... | |
 | James Ferguson - Astronomy - 1839 - 554 pages
...allowances are to be made. 1 he me' The simple machines, usually called mechanical powers, powers, are six in number, viz. the lever, the wheel and axle,...the pulley, the inclined plane, the wedge, and the screws.0 — They are called mechanical powers, because they help us mechanically to raise weights,... | |
 | Society for the diffusion of useful knowledge - 1839 - 380 pages
...manner at another point, is a machine. The simple machines or mechanical powers are six in number — the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. These are the elements of all machines, however complicated. See Mcch., Treat. II., Arts. 1—6. In... | |
 | Frederick Emerson - Arithmetic - 1839 - 300 pages
...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 Wheel and Jlxle, the Pulley, the Inclined Plane, the Wedge, and the Screw. The advantage gained by the use of... | |
 | Frederick Emerson - Arithmetic - 1839 - 300 pages
...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 Wheel and •lilt, tlie Pulley, the Inclined Plane, the Wedge, and the Screw. The advantage gained by the use... | |
 | Benjamin Greenleaf - Arithmetic - 1839 - 356 pages
...The body which receives motion from another, is called the weight. The mechanical powers are five, the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Screw and the Wedge. LEVER. The lever is a bar, movable about a fixed point, called its fulcrum or... | |
 | George Leonard (Jr.) - Arithmetic - 1839 - 362 pages
...SOMETIMES CALLED MECHANICAL POWERS. LESSON 185. There are usually reckoned six simple machines — the lever, the wheel and axle, the pulley, the inclined plane, the screw, and the wedge. The force that raises a weight, or overcomes a resistance, is called the power.... | |
 | Frederick Emerson - 1840 - 302 pages
...overcoming greater resistance than could be effected by the direct application of natural strength. They are usually accounted six in number; viz. the...Pulley, the Inclined Plane, the Wedge, and the Screw. The advantage gained by the use of the mechanical powers, does not consist in any increase of the quantum... | |
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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... 
