I am trying to build a couple bicycle racks and need help confirming that I got the forces right. The area in question is at the bottom assuming the reaction force will be to the right for the matter of balancing the moment. It's been a while since I took classical physics, so please correct me if I'm wrong. The diagram is showing one long vertical 2x4 set alongside a garage door track (Fr) along with the cross-sections of other timbers at the top and bottom. I am trying to be sure on what side to put the smaller stop block at the bottom.