1. The problem statement, all variables and given/known data When I release a large pendulum from about my eye level, why does it not return and hit my face? 2. Relevant equations PE=mgh and KE= 1/2mv^2 possibly? 3. The attempt at a solution I was thinking that it had something to do with a transfer of potential energy to kinetic energy, with the kinetic energy getting smaller in each swing.