Newton's Principia, sections I, II, III, with notes and illustrations. Also a collection of problems (1863)
Newton, Isaac, Sir, 1642-1727, Frost, Percival, 1817-1898 · Cambridge, London, Macmillan and Co · leaf 190
the pressure at any point varies inversely as the radiusof curvature. Let 0 be the point of starting, PQ a small arc described bythe body, QT, Q U perpendiculars on SP, HP. Take -^~ 5 ~Wp* » ^» as *ne measures of the acceleratingeffects of the forces, and of the pressure of tube. PROP. VI. THEOREM… … -A S C^j[> •B- and similarly for the force tending to H- a/ Also, Hr-B, if „ be the radius of curvature at P,PF 2 CD* 2SP.HP
Mechanics · Celestial mechanics
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