Use \(g=10\text{ m s}^{-2}\).

A 4500 kg van tows a 350 kg trailer on a straight horizontal road, connected by a light rigid towbar parallel to the road. Resistances are \(X\text{ N}\) on the van and 120 N on the trailer. Driving force is 2500 N, coupling tension is \(T\text{ N}\), and acceleration is \(0.4\text{ m s}^{-2}\). Find \(X,T\). [4]