In this course, Gravitation, we will understand how to describe a gravitational field as a field of force and define gravitational field strength and how can we represent a gravitational field using field lines. Moreover, we will also understand how the gravitational potential energy, of two point masses is a consequence of gravitational potential. Finally, we will define and solve problems involving gravitational potential and problems involving the gravitational field strength of a uniform field and the field of a point mass and analyse circular orbits in an inverse square law field, including geostationary orbits.