A tractor of mass pulls two identical trailers

PHYSICS · Subjective · CBSE · Physics · Force and Laws of Motion · Force and Laws of Motion

Problem

A tractor of mass

3000\,\text{kg}

pulls two identical trailers, each of mass

2000\,\text{kg}

, along a horizontal road. The pulling force exerted by the tractor is

18000\,\text{N}

and the total rolling friction opposing the motion is

3000\,\text{N}

. Calculate the acceleration of the tractor–trailers system.