1. The problem statement, all variables and given/known data A train wheel's have a coefficient of 0.08. What is the steepest slope the train can climb? 2. Relevant equations Friction force = coefficient x component of train's weight perpendicular to slope x 9.81 If the train is on the point of slipping Friction force = component of train's weight parallel to slope x 9.81 3. The attempt at a solution[/ 90 - ArcTan ( 1 / 0.08 ) = 4.57 degrees. The answer is supposed to be 2.54 degrees ?