Mechanics of engineering. Comprising statics and dynamics of solids: and the mechanics of the materials of constructions, or strength and elasticity of beams, columns, arches, shafts, etc (1888)
Church, Irving P[orter], 1851- [from old catalog] · New York, J. Wiley & sons · leaf 190
olved alongCA and CB, produces (nearly) equalpressures, each being i\T = P -f- 2 cos <*, at the two axles ofthe friction-wheels, which rub against their fixed plumber-blocks. R = P -\- Pi -f- 6r1? and .*. contains the unknown P,but approximately = G -\- 2P^ i.e., is nearly the same (in thiscase)… … Fig. 179. = 2fJV i2*r =a1 a, cos a fP27tr. Whereas, if C revolved in a fixed bearing, =fP27rr. Work lost per revol. without friction-wheels, Apparently, then, there is a saving of work in the ratio rx\ax cos a, but strictly the P is not quite the same in the two cases ;for with friction-wheels the…
Mechanics, Applied · Engineering · Strength of materials
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