Greenhill, G. (George), Sir, 1847-1927 · London and New York, Macmillan and Co. · leaf 430
Fig. 93. Fig. 94. For writing p and r for the lengths PM and PG, thena well-known relation gives, with the usual notation, ^ = ^* + lin the ellipse or hyperbola ; and here When a is infinite, then, as at first, 7/ = c sec i/r, or 7/^ -en in the curve GP \ and therefore p^ = cr in the rollingcurve…
Hydrostatics
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