The square gate, shown in Figure P4.10, is hinged at A and separates the water in the reservoir from


The balance importation, shown in Figure P4.10, is hinged at A and separates the inspire in the reservoir from the inspire in the tunnel. If the importation has size of 3 m X 3 m and weighs 15 t-m/s2 , what is the apex tallness, h, such that the importation allure sojourn closed?