A truck of mass m is connected to a trailer by a rope. The rope can carry 7,000 N before it breaks. The truck now starts pulling the trailer with an external force.
Draw a free-body diagram of this situation. (Be sure to include friction.)
The trailer accelerates at 3 m/s^2. As it drags across the ground, a frictional force of 1,000 N acts in the direction opposite its motion. However, the rope breaks. Using the rope's breaking strength of 7,000 N, what can you say about the mass of the trailer?
What is the normal force acting on the trailer?
What is the coefficient of kinetic friction present?