A particle can slide along a track with elevated ends and a flat central part, as shown in Figure 8-53. The flat part has length L = 40 cm. The curved portions of the track are frictionless, but for the flat part the coefficient of kinetic friction is µk = 0.32. The particle is released from rest at point A, which is a height h = L/2. How far from the left edge of the flat does the particle finally stop? I set this equation: mgh = μmgd d = h/μ d = 20/.32 d = 62.5 cm Because the answer > L, I subtracted 40 cm from it and got 22.5 cm as the answer (I'm supposed to give it in cm). But it won't accept my answer. What did I do wrong?