posted by Carl .
a couple part in a car on moonlit evening. Find that their car is stop in the sand. The women having studied physics, ties a rope to the car's bumper and stretches it around a tree in front of a car. She then pushes with 200 newton force against the horizontal. The cars starts to move. calculate the force of the rope on the car.
More info required. What angle does she push relative to the rope? What is the spring constant of the rope?