1. The problem statement, all variables and given/known data If the coefficient os static friction between the incline and block is .3, then what is the minimum force,F, needed to prevent the block from sliding? m=20kg theta= 50 degrees 2. Relevant equations Normal force= mgcosx Fs= uk mgcosx 3. The attempt at a solution I know how to solve this this for the perpendicular force (up the ramp) but I cant seem to figure out how to do it for thr parallel force.