1. The problem statement, all variables and given/known data A passennger is standing without slipping in a forward accelerating train. The coeffeciant of the feet and the floor is 0.47. Determine the maximum required acceleration of the train relative to the track if the passenger is not to slip 2. Relevant equations F=ma 3. The attempt at a solution I know that acceleration = 0, but when I rearrange the equations. I end up with F(a) = ma + (mu)mg. But I only know (mu)... so I end up not being able to solve it.