Lets say I am wrestling man who weights 60kg. In order for me to take him down and score 2 points I need to pick up and return him to the mat. Using the potential energy equation found in our reference table (PE= mgh) I can calculate my opponents potential energy at the point in which he is level with my head. I would multiply 60kg by 9.81 m/s by lets say 1.5m. this would result in a potential energy of 441.45 joules. If I were to increase the height of my opponent his potential energy would also increase. Or if I were to wrestle someone who weighed more their potential energy would also increase. Other situations where I could use this equation in wrestling are when I'm mat returning someone.