1. The problem statement, all variables and given/known data 14.6 The coefficient of kinetic friction between the slider and the rod is μ, and the free length of the spring is ##L_0 = b##. Derive the expression for the work done by the friction force on the slider as it moves from A to B. Neglect the weight of the slider. 2. Relevant equations 3. The attempt at a solution I am going the right direction with my solution? I don't see to be getting the ##-0.1186μkb^2## solution.