Assertion: newton's body | /r/AtLocation | concentric circular orbits
Facets:
value: uniformly
type: MANNER
Source sentences:
text: Recognizing that Newton's reasoning is approximative answers another complaint about the “deduction” of universal gravity: Newton invokes the proposition, if bodies move uniformly in concentric circular orbits whose periods vary as the 3/2 power of the radii, then the centripetal forces acting on these bodies vary as the inverse-square of the radii of the orbits, knowing full well that observation had established for centuries that the planets do not move uniformly in circular orbits.