Recent content by MaxKempar

The main thing that I don't understand is F = f1+f2, how can a powerless trailer have a positive force. Wouldn't F = f1-f2?

I have a truck (m1,27000 kg) pulling a trailer (m2, 8500 kg) with a chain holding the two together (T). The overall acceleration is 0.78 m/s^2. Find f1 force on the truck, f2 force on the trailer and T, tension force. Here is what I did: since the force comes all from the truck, f1 =...