4:19 AN L . Determine the force in each member of the loaded truss. The forces are positive if in tension, negative if in compression. Assume F = 3100 N, a = 2.8 m, b = 5.6 m, 0 = 41. B b Answers: AB = i N AC = N AD = i N BC = N CD - i N III O K4:19 AN L . Determine the forces in members BC, BE, and BF. The triangles are isosceles. The forces are positive if in tension, negative if in compression. 25 B C 69 6go 690 D G E Answers: BC BE BF = i III O K