https://www.superphysics.org/research/newton/principia/book-2/sec-04/ Recent content in The circular motion of bodies in resisting mediums on Superphysics Hugo en https://www.superphysics.org/research/newton/principia/book-2/sec-04/prop-16/ Mon, 01 Jan 0001 00:00:00 +0000 https://www.superphysics.org/research/newton/principia/book-2/sec-04/prop-16/ <h3 id="proposition-16-theorem-13">Proposition 16 Theorem 13</h3> <p>If the density of the medium in each of the places is reciprocally as the distance of the places from the immoveable centre, and the centripetal force be reciprocally as any power of the same distance, that the body may revolve in a spiral intersecting all the radii drawn from that centre in a given angle.</p>