You place a penny on a ruler that is clamped to a table. The mass of the penny is 2.50 grams. You bend the ruler 7.00 centimeters and launch the penny up into the air. The penny goes 1.30 meters into the air. Ignore air resistance and friction to answer the following: a. From the moment it left the ruler to the peak of its travel, what was the change in gravitational potential energy of the penny?
