Submerged Door with Hinge and Pressure on Liquid Surface
Channel: Linda Fahlberg-Stojanovska
Date: 28/05/2012

The 2x3 door in the side of the tank is hinged along its bottom edge (see image). A pressure of 5 kPa (gage) is applied to the liquid surface. Find the force Ft (at door top) required to keep the door closed. First we find the pressure Fp on the door. Then the center of pressure and then use torque (moments) to find Ft. Done with formulas AND integrals.