QuestionDetails: A walkway suspended across a hotel lobby is supported at numero

Question

QuestionDetails: A walkway suspended across a hotel lobby is supported at numerouspoints along its edges by a vertical cable above each point and avertical column underneath. The steel cable is 1.08 cm in diameter and is 5.75 m long before loading.The aluminum column is a hollow cylinder with an inside diameter of16.14 cm, an outside diameter of 16.24 cm, and an unloaded lengthof 3.25 m. When the walkway exerts a load force of 9600 N on one of the support points, through whatdistance does the point move down?
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Explanation / Answer

the Young's modulus of the steel cable is Y = [(F/A)/(l/lo)] = (F * lo/A *l) or l = (F * lo/A * Y) F = 9600 N,lo = 5.75 m,A = *(d2/4) where d = 1.08 cm = 1.08 * 10-2 m andY = 200 * 109 Pa

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