ASTR 101 Lecture Notes - Lecture 16: Electric Potential, Hyperbola
19 Oct 2016
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Lecture 16 - newton and the application of gravity. Planets are orbiting the sun under in uence of gravitational attraction. Obeying newton"s laws of motion, accelerating, and moving because of gravitational forces felt. Ball will coast along a curve shaped as a parabola and will never return; has just enough speed to escape the gravitational attraction; will never return to earth and move at a steady speed even far away. What if you re even faster? cannon will move along curve known as hyperbola and would move with considerable speed even far away. If it was red at a theoretical in nite speed, the path would be close to a straight line. Nal path or orbit depends on the speed with which you launch (energy) and the initial location and direction. Kepler discovered elliptical orbit for bound orbits (repeated path) Now newton introduced parabolas and hyperbolas for unbound objects.
