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Telephone and electrical lines are allowed to sag between poles so that the tension will not be too great when something hits or sits on the line. Suppose that a line were stretched almost perfectly horizontally betweern two poles that are 30 m apart. If a 0.25-kilogram bird perches on the wire midway between the poles and the wire sags 1.0 cm, what would the tension in the wire be?

User Mervyn Lee
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1 Answer

14 votes

Answer:

Tension in the wire= 1837.5 N

Step-by-step explanation:

The answer along with solution can be found in the image attached.

Telephone and electrical lines are allowed to sag between poles so that the tension-example-1
User Yuan
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