1. The problem statement, all variables and given/known data A water wheel rotates a generator producing power from vertically flowing water onto its blades. Height of water is 100m above blades. init vert velocity is 0. I have calc velocity at hitting wheel as 44.3m/s calc the mass of water hitting the wheel per second to create 20kW power Calc rev/min of gene (wheel and gene combined radius of gyration 3m and mass 120kg) 2. Relevant equations v²=u²+2as K.E=0.5mv² P.E=mgh J=mk² g=9.8m/s² 3. The attempt at a solution For mass I have calculated P.E and K.E in terms of m and made equal to 2000 giving answer 10.2Kg? not sure if this is right. For rev/min I have worked out J=120x3² = 1080kg m², not sure where to go from here?