In the figure below, a man is trying to get his car out of mud on the shoulder of a road. He ties one end of a rope tightly around the front bumper and the other end tightly around a utility pole 15 m away. He then pushes sideways on the rope at its midpoint with a force of 550 N, displacing the center of the rope 0.31 m from its previous position, and the car barely moves. What force does the rope exert on the car?
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