Question: A cable of length L + is suspended between two points which are at the same elevation and a distance L apart. (a) Assuming

A cable of length L + Δ is suspended between two points which are at the same elevation and a distance L apart.

(a) Assuming that Δ is small compared to L and that the cable is parabolic, determine the approximate sag in terms of L and Δ .

(b) If L = 30 m and Δ = 1.2 m, determine the approximate sag.

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