1. The problem statement, all variables and given/known data Here's a picture of the set up. I need to find out what angle I need to have the plane raised to so that the blocks aren't moving. 2. Relevant equations F = ma 3. The attempt at a solution For the first block [tex]F_k=μ_kF_N[/tex] [tex]F_T+F_N-μ_kF_N+2mgcosθ+2mgsinθ=0[/tex] Since the [tex]F_N[/tex] and [tex]2mgcosθ[/tex] cancel each other, I eliminated them from the problem. I set the right side equal to 0 since there is no acceleration Then I get [tex]F_T = μ_kF_N + 2mgsinθ[/tex] For the right block [tex]mg = F_T[/tex] So I input that into my equation for the other block and get [tex]mg=μ_kF_N+2mgsinθ[/tex] For [tex]F_N[/tex] I plug in [tex]2mgcosθ[/tex] And get [tex]mg=μ_k2mgcosθ+2mgsinθ[/tex] And this is when I know something is wrong. That [tex]μ_k[/tex] is the coefficient for kinetic friction, not static friction, and I have [tex]sinθ[/tex] and [tex]cosθ[/tex], so that's two unknowns. How do I find out the coefficient for static friction? Do I even need it? And what went wrong with my analysis of this problem? Thanks.