1. The problem statement, all variables and given/known data Basically, I need to find the maximum static friction of my shoe against a wood board. I discovered that after increasing the slope of the board, my shoe slipped at an angle of 29.33 degrees. (using tan theta = O/A) O being 42.7 cm and A being 76 cm. The shoe has a weight of 5 Newtons. I calculated the mass of the shoe by using the formula Fg = mg, where Fg = 5, and g = 9.8. Thus: 5 = m(9.8) which equals 0.51. A quick recap: theta = 29.33 degrees weight (Fg) = 5 mass = 0.51 I am supposed to find the Maximum Static Friction of my shoe against the wood. I do not[b/] know the co-efficients of either (we are not supposed to use them from out text's) 2. Relevant equations tan theta = O/A Fg = mg Ff = u Fn (u is miu or the frictional co-efficient) 3. The attempt at a solution Here is a diagram depicting my work so far. I am basically stuck. Any help would be great (formulas, tips, anything) Thanks guys and gals Coleman.