1. The problem statement, all variables and given/known data A locomotive has a mass of 40 tonnes. In one situation, the locomotive is pulling two trucks, each of mass 10 tonnes Calculate the tension in the coupling pulling the two trucks behind the locomotive. The coupling is positioned such that it is linking the locomotive and the first truck, which is linked to the second truck. acceleration of system = 0.2 ms^-2 2. Relevant equations F=ma 3. The attempt at a solution Well tension is the amount of force being exerted by two objects on a mass in between these two objects. So would I calculate the force exerted by locomotive and then add that to the force exerted by the two trucks?