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 186
ultimately supposed to be describeduniformly with the angular velocity at P, the angular velocity atPx T= / PSQ, ultimately. 145. To find the angular velocity in a central orbit. Let PQ be a small arc described in the time T, draw QNperpendicular to SP, and let h = twice the area described in… … PSQ therefore the angular velocity = ^ — ^ 9 ultimately, h SP2 146. To find the angular velocity of the perpendicular on thetangent from the center of force. Draw 8Y perpendicular on the tangent PY, and let PV bethe chord of curvature through S. The angle described by SY in the time T is equal to…
Mechanics · Celestial mechanics
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