1. The problem statement, all variables and given/known data Today we were studying a block on an incline and determining the angle needed for the block to start sliding. The question asked is: Why is the equation for the coefficient of static friction independent of the weight of the block? 2. Relevant equations ΣFx=Fapplied-fs=0 ΣFy=Fn-mgcosθ=0 μs=height/length 3. The attempt at a solution My reasoning is that because the coefficient of static friction is reliant by height over length, weight has no involvement in this matter. If you double the weight of an object on an incline, the coefficient of static friction would still be proportional to coefficient if you were to leave the weight the same. I feel like I am on the right track, I just feel like my reasoning is missing proof.