A short column is composed of two steel [E = 30,000 ksi, ν =…

A short column is composed of two steel [E = 30,000 ksi, ν = 0.30] segments, each with a length of 4.2 in. Segment (1) is hollow with an outside diameter of 1.20 in. and a wall thickness of 0.20 in. Segment (2) is hollow with an outside diameter of 1.60 in. and a wall thickness of 0.20 in. How much shorter does the column become after a load of P = 830 lb is applied?

A steel [E = 195 GPa] rod with a circular cross section is u…

A steel [E = 195 GPa] rod with a circular cross section is used as a weight hanger. The straight part of the rod is 130 mm long. Determine the minimum diameter D required if this portion of the rod must hold a tensile load of 11.0 N without stretching more than 0.00310 mm.