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.