In fact, it will be the last of the three kinds of potential energy we are going to study in this book (the other two being due to the gravitational interaction, Ug and UG.) So to round out ...In fact, it will be the last of the three kinds of potential energy we are going to study in this book (the other two being due to the gravitational interaction, Ug and UG.) So to round out this chapter, we are also going to talk about graphs of more complicated potential energy functions, and how we can extract information from them.