A walkway suspended across a hotel lobby is supported at
numerous points along its edges by a vertical cable above each
point and a vertical column underneath. The steel cable is 1.27 cm
in diameter and is 5.60 m long before loading. The aluminum column
is a hollow cylinder with an inside diameter of 16.14 cm, an
outside diameter of 16.24 cm, and unloaded length of 3.25 m. When
the walkway exerts a load force of 8,250 N on one of the support
points, how much does the point move down?