PHYZSPRINGBOARD: POTENTIAL ENERGY A nail is partially driven into a block of wood. An iron ball is dropped onto the nail, driving the nail some depth into the wood. Without changing any characteristics of the wood or nail, how could a dropped iron ball drive the nail deeper into the wood? 1. Factor 1 a. One way a dropped iron ball could drive the nail even deeper into the wood is if... b. So the drive depth is directly inversely) proportional to... c. In symbols, D x 2. Factor 2 a. One way a dropped iron ball could drive the nail even deeper into the wood is if... b. So the drive depth is directly__inversely) proportional to... c. In symbols, D x 3. Factor 3 a. One way a dropped iron ball could drive the nail even deeper into the wood is if... b. So the drive depth is directly inversely) proportional to... c. In symbols, D x 4. The extent to which a dropped ball can drive in a nail is called its gravitational potential energy. a. What determines a body's gravitational potential energy? b. Write an equation for gravitational potential energy.: P :PE= I I T 2 T II 3