1. The problem statement, all variables and given/known data Jeremy is trying to walk up an icy sidewalk. If he has leather shoes (coefficient of leather on ice = 0.3) then what is the steepest angle up which he can safely walk? What would have to be his coefficient of friction if the hill were 65 degrees? 2. Relevant equations Ff = μ(Fn) F = ma (?) Fw = mg (?) 3. The attempt at a solution No idea.