 | John Farrar - 1825 - 476 pàgines
...: OT; that is, the tension of either part of the rope is to the force exerted cgainst the centre F, as the radius of the pulley is to the chord of the arc embraced by the rope. Now it is evident that this last ratio is the greatest possible when the two... | |
 | Francis Joseph Grund - 1836 - 308 pàgines
...mathematically proved, that the tension of either part of the rope is to the weight at the, centre as the radius of the pulley is to the chord of the arc embraced by the rope. Let AB, HG (Fig. 99), be produced until they meet in a point, C. Upon BC and... | |
 | William Holms Chambers Bartlett - 1850 - 662 pàgines
...F : W :: R : AB; that is to say, the power is to the resistance as the radius of relation of power the pulley is to the chord of the arc enveloped by the rope. and re8i"anc» '< ameter of the pulley 1.3 feet, and that of its eye 0.045 feet ; the diameter of the... | |
 | Gaspard Monge - 1851 - 228 pàgines
...formed by the directions of the two others ; 3d, each of the two forces P and Q is to the third force s, as the radius of the pulley is to the chord of the arc embraced by the rope. COROLLARY I. Fig. 60. 155. We observe that if the cord, fastened to the block,... | |
 | Isaac Wilber Jackson - 1852 - 202 pàgines
...and Q are equal, and, as in the preceding case,, that P i R : : 10 : IH. Thus, in the movable pulley, the power is to the resistance., as the radius of the pulley is to the chord of the arc in contact ^uith the rope. 1°. When the cords El and FH are parallel, the chord IH becomes a diameter,... | |
 | William Holms Chambers Bartlett - 1853 - 462 pàgines
.... (570) And omitting the terms involving the friction and stiffness of cordage, — L. ~vl "~ ~R ' that is, the power is to the resistance as the radius of the arbor is to that of the wheel ; which relation is exactly the same as that of the common lever. FIXED... | |
 | Isaac Wilber Jackson - 1854 - 218 pàgines
...readily inferred that P and Q are equal, and, as in the preceding case, that Thus, in the movable pulley, the power is to the resistance, as the radius of the pulley is to the chord of the arc in contact wilh the rope. 1° When the cords El and FII are parallel, the chord IH becomes a diameter,... | |
 | William Holms Chambers Bartlett - 1855 - 646 pàgines
...F : W :: R : AB; that is to say, the power is to the resistance as the radius of relation of power the pulley is to the chord of the arc enveloped by the rope. >tance; NATURAL PHILOSOPHY. data from Hie tables; data of the example; amcter of the pulley 1.3 feet,... | |
 | Joseph Allen Galbraith - 1860 - 174 pàgines
...pulley, in which the two directions of the string are not parallel, prove that the Power is to the Weight as the radius of the pulley is to the chord of the arc in contact with the string. 10. In a Burton of the first kind, in which the strings are not parallel,... | |
 | Henry Lee Scott - 1861 - 674 pàgines
...rope is to the radius r of the pulley. p= «=«--. c MOVABLE PULLEY. — The power is to the weight, as the radius of the pulley is to the chord of the arc enveloped by the rope. The pressure WY on the fixed end of the rope is equal to the power : P= Q= — . c In a system of n... | |
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The power is to the weight, as the radius of the pulley is to the chord of the arc enveloped by the rope. 
