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 1.27cm in diameterand is 5.75m long before loading. The aluminum column is a hollowcylinder with an inside diameter of 16.14cm, an outside diameter of16.24cm, and an unloaded length of 3.25m. When the walkway exerts aload force of 8500N on one of the support point, through what distance does the point move down?