1. The problem statement, all variables and given/known data The plug for the drain of a water tower is located 3.0 m below the surface. The plug is circular and has a diameter of 5.0 cm. If the density of water is 1000 kg/m3 , how much force is required to remove the plug (you may ignore the weight of the plug itself) 2. Relevant equations A= pi * r ^2 F=P *A 3. The attempt at a solution A = pi * r^2 = pi * (0.025)^2 =1.96 * 10 ^-3 m^2 F= pGH * A = (1000 kg/m3) (9.8) (3.0 m) * 1.96 * 10 ^-3 m^2 = 57.624 N is this correct? there is no pressure from the atmosphere right?