1-1 Determine the resultant internal normal force acting on the cross section through point A in each column. In (a), segment BC weighs 180 lb/ft and segment CD weighs 250 lb/ft. In (b), the column...

Extracted text: 1-1 Determine the resultant internal normal force acting on the cross section through point A in each column. In (a), segment BC weighs 180 lb/ft and segment CD weighs 250 lb/ft. In (b), the column has a mass of 200 kg/m. 5 kip |8 kN B 200 mm 200 mm 6 kN| 6 kN 10 ft 8 in. 3 m 8 in. 200 mm 200 mm 3 kip 3 kip 4.5 kN 14.5 kN C 4 ft A A 4 ft I m D (а) (h)