# Solution: Calculate the allowable spacing of the poles assuming a parabolic cable

(Last Updated On: May 28, 2023)

#### Problem Statement: EE Board April 1994

A cable supported at two points of same level has a unit weight, ω of 0.02 kg per meter of horizontal distance. The allowed sag is 0.02 m and a maximum tension at the lowest point of 1200 kg and a factor of safety of 2. Calculate the allowable spacing of the poles assuming a parabolic cable.
• A. 64.02 m
• B. 66.37 m
• C. 67.76 m
• D. 69.28 m

The allowable spacing of the poles assuming a parabolic cable is 69.28 m.
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