 | Benjamin Greenleaf - Arithmetic - 1841 - 334 pages
...PULLEY. The pulley is a small wheel, movable about its axis by means of a cord, which passes over it. When the axis of a pulley is fixed, the pulley only...them. If each movable pulley has its own rope, each pulley will be double the powTo find the weight, that may be raised by a given power. RULE. — Multiply... | |
 | John M'Nevin - Arithmetic - 1841 - 300 pages
...When the axis of the pully is fixed, the pully only changes the direction of the power; if moveable pulleys are used an equilibrium is produced when the...one to the number of ropes applied to them, if each moveable pully has its own rope, each pully will be double the power. To find the weight that may be... | |
 | John M'Nevin - Arithmetic - 1841 - 300 pages
...When the axis of the pully is fixed, the pully only changes the direction of the power; if moveable pulleys are used an equilibrium is produced when the...one to the number of ropes applied to them, if each moveable pully has its own rope, each pully will be double the power. To find the weight that may be... | |
 | Charles Waterhouse - Arithmetic - 1842 - 178 pages
...PULLEY is a small wheel, movable about its axis by means of a cord, which passes over it. 5. PRINCIPLE. When the axis of a pulley is fixed, the pulley only...them. If each movable pulley has its own rope, each pulley will double the power. THE SCREW is a spiral thread or groove, cut round a cylinder, and every... | |
 | Denison Olmsted - Physics - 1842 - 384 pages
...principle is generalized in the following proposition. In the pulley an equilibrium is produced, whc.n the power is to the weight as one to the number of ropes. 159. The ascent of the weight is in all cases retarded in proportion us the efficacy of a given power... | |
 | Denison Olmsted - Physics - 1844 - 618 pages
...the properties of the Screw more immediately depend. THE INCLINED PLANE. 129. In the inclined plane, an equilibrium is produced, when the power is to the weight, as the sine of the inclination of the plane is to the sine of tlw angle, which the direction of the power... | |
 | Denison Olmsted - Physics - 1846 - 454 pages
...let W be a weight drawn up this plane by a power applied at P, and acting parallel to the plane. Then an equilibrium is produced, when the power is to the weight, as the height of the plane to its length. 162. The inclined plane becomes a mechanical power K consequence... | |
 | Benjamin Greenleaf - Arithmetic - 1850 - 368 pages
...PULLEY. The pulley is a small wheel, movable about its axis by means of a cord, which passes over it. When the axis of a pulley is fixed, the pulley only...them. If each movable pulley has its own rope, each pulley will be double the power. To find the weight that may be raised by a given power. RULE. —... | |
 | Charles Guilford Burnham - 1850 - 350 pages
...299:— The pulley is a small wheel, moveable about its axis by means of a cord, which passes over it. When the axis of a pulley is fixed, the pulley only changes the direction of the power ; if moveable pulleys are used, an equilibrium is produced, when the power is to the weight as one to the... | |
 | Benjamin Greenleaf - Arithmetic - 1853 - 380 pages
...PULLEY. The pulley is a small wheel, movable about its axis by means of a cord, which passes over it. When the axis of a pulley is fixed, the pulley only...used, an equilibrium is produced when the power is to the*weight as one to the number of ropes applied to them. If each movable pulley has its own rope,... | |
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The pulley is a small wheel, movable about its axis by means of a cord, which passes over it. When the axis of a pulley is fixed, the pulley only changes the direction of the power ; if movable pulleys are used, an equilibrium is produced, when the power... 
