centripetal force

Kepler's Laws of Planetary Motion

Achyut Bharadwaj
January 2020
Kepler, planetary motion, angular displacement, angular velocity, centripetal force

In this article, we will be going through some of the basic concepts required to understand Kepler’s laws. Angular Displacement and Velocity # Angular Displacement # Just as displacement is defined as the change in position of an object, angular displacement is defined as the angle swept by an object travelling in a circular path. Let’s look at an example. Say, an object travels from point $A$ to point $B$. In this process, say it covers an angle of $\theta$ (see Fig. ...