1. The problem statement, all variables and given/known data A lobster tank in a restaurant is 8 ft long by 7 ft wide by 2 ft deep. Find the water force on the bottom and on each of the four sides. The density of water is 62.4 lb/ft3. 2. Relevant equations Pressure = density * gravity * height Force = Pressure * Area 3. The attempt at a solution Force on the bottom = density * gravity * height * area = 62.4g(2)(56) It is asking for the Force in Lb In my book we used integrals for this type of problem but I don't see the point.. I'm trying to put the answer in webassign. For the sides would it be the same equation without gravity, as gravity is only in play in the up and down directions?