Rankine, William John Macquorn, 1820-1872, Millar, William J, Tait, Peter Guthrie, 1831-1901 · London, C. Griffin and company · leaf 533
d, whose particles revolveuniformly in vertical circles, a wavy surface of trochoidal profile fulfils the con-ditions of uniformity of pressure—such trochoidal profile being generated byrolling, on tlie underside of a straight line, a circle tohose radius is equal to theheight of a conical pendulum… … Fie. l. X; and let it make n revolutions in a second. Then the centrifugal forceof B (taking its mass as unity) will he 4 it2 n2 . C B. Draw CA vertically upwards, and of such a length that centrifugalforce : gravity :: C B : AC; that is to say, make AC = 9 4 77- »2 which is the well-known…
