Concept 3-Setup equilibrium equations [P4] Fix the forces (the ones given are incorrect) and write equations for the sum of forces acting at point O. B A 12 m x 4 m FOA = FOA N FOB = FOB (-) N -61+12k Foc = Foc N 7 6 m [P5] Fix the forces (the ones given are incorrect) and write equations for the sum of forces acting at point A. 6 m B 3 m A 4 m D FAR FAR (21-1+2) N = 5 FAC-FAC (1+27) N = 5 2 m FAD = FAD 2 m y +2 N 5