1. The problem statement, all variables and given/known data Question: The plate shown, picture is attached, is subjected to force F and 3 reaction forces R1 R2 R3. Find R1 2. Relevant equations equations of equilibrium: sum of Fx = 0 sum of Fy = 0 sum of moment about point O = 0 3. The attempt at a solution sum of Fx = 0: (going right is positive) -R1 - R2 + 3/5 R3 = 0 sum of Fy = 0: (going up is positive) -56kN + 4/5 R3 = 0 so, R3 = 70kN sum of moment about point O = 0 (going anticlockwise is positive) R1 x (0.11m) - R2 x (0.11m) = 0 so, R1 = R2 therefore, R1 = R2 = 21kN I am unsure of whether I have done this question correctly, in particular the moment about O. Also, how do you figure out which direction the moment is in (anticlockwise/clockwise). As in, I took R1 x 0.11m as positive due to anticlockwise and R2 x 0.11m as negative due to clockwise moment. is this correct? Thanks for any help you can offer!