Submerged Gates: ConcepTest and Example Problem

Try to answer this ConcepTest and solve this example problem before using this module. Studies show that trying to answer the questions before studying material improves learning and retention. By the end of this module, you should be able to answer these on your own. Answers will be given later in this module.

A practice problem for a Submerged Gates self study module.
Example Problem 1

A door (3 ft tall and 2 ft wide) is located in the side of a tank and is hinged along its bottom edge. A pressure of 100 lbf/ft2 is applied to the liquid free surface of the tank, and the top of the liquid free surface aligns with the top of the submerged door. Find the force required to keep the door closed. The specific weight of the liquid is 100 lbf/ft3.