7. Determine the resultant internal loading acting on the cross section of the frame at points F and G. The contact at E is smooth (i.e., only a normal force occurs at the point of contact). 4 ft D 5 ft 30 1.5 ft 1.5 ft | 2 ft BG E -3 ft- 2 ft F 80 lb Figure 4: Figure adapted from Hibbeler, Problem 1.26