A vast freshwater swimming pool is constructed on the seashore of New South West Australia, where the seawater level is 6 m. One side of the freshwater swimming pool is built with a solid vertical wall to prevent seawater intrusion into the freshwater swimming pool. The wall is hinged at the bottom of the freshwater swimming pool. Determine the maximum water depth (m) in the freshwater swimming pool so that the freshwater swimming pool wall can stand still. Take the specific gravity of the seawater as 1.06. You can take the density of water as 1000 kg/m³, water viscosity as 0.001 kg/ms, atmospheric pressure as 101 kPa, and gravitational acceleration as 9.81 m/s².