1. The problem statement, all variables and given/known data See attachment. 2. Relevant equations F = μN 3. The attempt at a solution I attached the FBD I drew. I then did ƩFx = FA + FBcosθ - NBsinθ = 0 ƩFy = NA -W + NBcosθ + FBsinθ = 0 ƩMA = 19.5NB - 3.75W = 0 ƩMB = 3.75W - 7.5NA + 18FA = 0 FA = μNA FB = μNB θ = arctan(18/7.5) = 67.38° I know μ is supposed to equal .18, but I can't get it. I've tried substituting different things I don't know how many times now, and I can usually get to an expression of just μ or μ and θ, but I can never get it to equal .18.