1. The structure below supports a 200-kg mass at G and is supported by two pin joints, at A and C. The connections at D, E, and F are held together by pins. a.) Identify whether any two-force members are present in the structure. b.) Determine the forces experienced at joint D on member EDC and find the force in the rope AB. Report the forces on EDC in Cartesian vector form. 800 mm 400 mm- B E D 200 mm F 400 mm- + -800 mm- 400 mm- |-