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Found in: Page 137

### Physics For Scientists & Engineers

Book edition 9th Edition
Author(s) Raymond A. Serway, John W. Jewett
Pages 1624 pages
ISBN 9781133947271

# Twenty people participate in a tug-of-war. The two teams of ten people are so evenly matched that neither team wins. After the game, they notice that a car is stuck in the mud. They attach the tug-of-war rope to the bumper of the car, and all the people pull on the rope. The heavy car has just moved a couple of decimeters when the rope breaks. Why it did not break when the same twenty people pulled on it in a tug-of-war?

The rope breaks because it couldn’t support the tension that was created by the twenty people pulling the car.

See the step by step solution

## Tension on the rope.

Tension force is defined as the force that is transmitted by a rope, string, or wire when pulled by forces acting from opposite sides. The pulling force is directed along the length of the wire, pulling energy evenly onto the bodies at the ends.

## When twenty people participated in a tug-of-war:

In the first case, in which twenty people participated in a tug of war the tension was created by ten people pulling on one side and ten people pulling on the other side.

## When twenty people pulled the car with the rope:

In the second case, however, twenty people pulled on one side until the rope broke which means that the tension generated twice as big compared to the first case.