1. The problem statement, all variables and given/known data How can I calculate the GPM (gallons per minute) of water needed to make a fountain shoot 120 feet in the air straight up? The diameter of the nozzle is 2 inches and friction is neglected. Also, what is the minimum liquid horsepower of the pump neglecting friction and assuming 100% efficiency. Please explain with formulas. Thanks. 2. Relevant equations Need equations. I'm sure there is a very simple equation to calculate this since there is only 2 given values, I just can't find it. 3. The attempt at a solution Need an equation to solve.