Hey guys, first-year Mechanical Engineering student here and a new forumer of this site too. I got a static question that I need help with. Question: Relevant Equations: Sum of all forces in the y direction = 0 Sum of all moments = 0 Attempted Working: I just need help finding the y-reaction force and moment reaction at A. I believe I can solve the rest of the question once I figure this out. What I did was: Ray + P = 0 by considering equilibrium of beam AB in the y direction RA = -P Ray + P + Rb/c = 0 by considering equilibrum of the entire beam AC (where Rb/c is the reaction force of the roller at 3L/2 from the LHS of the beam) Rb/c = -Ray - P = -P - P = -2P Sum of moments at A (anticlockwise is positive): Rb/c(3L/2) + PL - M1 - M2 - Mr = 0 where Mr is the moment reaction at A (assumed to be clockwise) Mr = Rb/c(3L/2) + PL - M1 - M2 = -2P(3L/2) + PL - M1 - M2 = -2PL - M1 - M2 This yielded me the wrong final answer. I apologise for not providing you guys with some free-body diagrams. I hope you can see what I've tried to do here. Any feedback is appreciated! Thanks!