What is the correct answer?


A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span

A. 2.5 cm

B. 3.0 cm

C. 4.0 cm

D. 5.0 cm

Correct Answer :

C. 4.0 cm

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