I have a seesaw style catapult. the arms are at a 4 to 1 ratio. I have all the masses and everything, the hacky is 50 grams, and The beam is 381 grams with a length of 50 cm (1 arm is 40 other is 10). My velocity to launch the hacky 2.5 meters away from the release point and have it land .76 m high is 6.4 m/s at a 64 degree angle off the floor. If i want to drop a 1 kg weight, how high would i need to drop it in order to achieve this velocity?