You apply a 5 lb force at the right end of a 3 ft wide door having hinges on the left side. Determine the moment created at the hinges that cause the door to swing open. Problem 2: moments of a Forced couple Determine the moment created by a force couple F1 and F2 if each force is 5 k, and the distance between them is 6 ft. Problem 3: Overturning of a Structure A 100 ft wide x 200 ft high x 50 ft deep ft building is subjected to a uniformly distributed horizontal (lateral) load of 50 psf on its broad face. The weight of the building is given 6,000 kips, acting vertically at the building's center of gravity. Determine a) the overturning moment and b) the resisting moment.