Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 365
upon an entire circle, is only in contact when the frictionwith a ring or surface comprised between two concentric ^u°fcaen.annuIarcircles. This occurs when the arbor of a wheel is urged 360 NATURAL PHILOSOPHY. find frictionagainst a ring; moment on asector of thelarger circle; in the direction of… … f • -j- • %B X sector A OB; A in which B denotes the radius of the larger ciVcle. Again,the moment of the friction on the sector A OB is that on thesmaller; f . Jf . 2 R> x sector A OB; and the difference, that on anelement of thering; If . jjl [R x sector A 0B - B sector AOB\ will be the moment…
Mechanics · Acoustics · Optics
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