On a bright sunny day, two girls play tug of war while standing on the opposite

Question

On a bright sunny day, two girls play tug of war while standing on the opposite sides of a pond. Initially, each stands at a distance d from her edge of the pond. Jackie, who weighs less than her opponent Sue, loses the tug of war and is forced to take a dive in the pond. (Most often, the tug of war is won by the heaviest, not the strongest, team--you will find out why when you learn more about friction.) Jackie's mass is m, the tension in the rope is T, and the opposing force of friction between Jackie's feet and the ground is f. Find the time Deltat it took Sue to win the competition 1.Which of the following describes an appropriate model for this problem? Jackie can be treated as a particle moving with constant velocity. Jackie can be treated as a particle moving with constant nonzero acceleration. Jackie can be treated as a particle moving with varying acceleration. 2.Which of the following assumptions or interpretations are reasonable? Check all that apply. Air resistance is substantial. Air resistance is negligible. The ground near the pond is slanted toward the water. The ground near the pond is horizontal. The mass of the rope equals Jackie's mass. The mass of the rope is negligible. The rope is unstretchable.

Explanation / Answer

1) Jackie can be treated as a particle moving with varying acceleration......2)Air resistance is negligible.The ground near the pond is horizontal.The mass of the rope is negligible. The rope is unstretchable.

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