Post by humbled valiant http://www.learner.org/resources/series42.html?pop=yes&pid=571# Lesson 22: The Kepler Problem The combination of Newton's law of gravity and F = ma. The task of deducing all three of Kepler's laws from Newton's universal law of gravitation is known as the Kepler problem. Its solution is one of the crowning achievements of Western thought. Text Assignment: Chapter 26 (Advanced Text -- Chapter 17) Instructional Objectives Be able to determine velocity in polar coordinates. Be able to state the formula for angular momentum in polar coordinates. Be able to state the Kepler problem in words. Understand how Newton's Laws give a solution to the Kepler problem.