A steam engine of mass 30000 kg pulls 2 wagons each of mass 20000 kg with an acceleration of 0.2 m/s/s. neglecting frictional force calculate (i) the force exerted by the engine (ii) the force experienced by each wagon
In this case the engine is pulling the rest of the wagons.
The force exerted by the engine = total mass of the wagons x acceleration = 2 x 20000 x 0.2 = 8000 N
Each wagon experiences a net force = 20000 x 0.2 = 4000 N