1. The problem statement, all variables and given/known data Mike is training for a strongman competition. Using a rope, Mike is pulling a locomotive of mass 2.00 x 10^4 kg coupled to two 0.50 x10^4 kg rail cars. Mike causes the train to accelerate at 0.045 m/s^2 . What is the magnitude of the force in the coupling between the locomotive and first car? Mass of locomotive = 2.00*10^4 kg Mass of each rail cars = 0.5*10^4 kg acceleration = 0.045m/s^2 2. Relevant equations F= ma 3. The attempt at a solution I just don't know exactly how to begin to answer this question. I am unable to find any similar questions to help me out with. A nudge in the right direction is all I need. Thank you!