1. The problem statement, all variables and given/known data A pump is required to lift 800 kg of water (about 210 gallons) per minute from a well 14.0 m deep and eject it with a speed of 8ms-1 (a) How much work is done per minute in lifting the water? (b) How much work is done in giving the water the kinetic energy it has when ejected? (c) What must be the power output of the pump? 2. Relevant equations Work Energy theorem 3. The attempt at a solution The book attempt was that work done = mgh... Why don't we add tension as well... Or force applied by pump???