6. calculate the total mechanical energy of a pendulum (mass = 4kg) as it swings from its highest point to its lowest point. use your equations for gravitational potential energy and kinetic energy to determine these values based on the data given below. total energy is the sum of gravitational potential energy and kinetic energy. in this problem, round gravity to: g = 10 m/s2. a. (6pts) complete this table (show your work in the blue blocks below! ) highest point lowest point velocity (m/s) 0.0 5.0 height (m) 1.25 0.0 kinetic energy (j) potential energy (j) total energy (j)