Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 368
et Q denote the quantity of work consumedby friction in the unit of time, and n the number of revo-lutions performed by the pivot in the same time; then will 2* X n; and we shall have work consumedby friction in aunit of time; for a ring j Q = {t.R.f.N.n . ■. . (116)for the circle, and Q =… … From these expressions, it ap-pears that the quantity of work con-sumed by friction, in a given time,augments with the radius of the piv-ot, or mean radius of the ring ; andas this work is always opposed to themotion, there is an advantage in re-ducing these radii as much as possi-ble, consistently…
Mechanics · Acoustics · Optics
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