A thin-walled tube with external radius of 100 mm and wall thickness of 2 mm, is fixed at one end

Q. A thin-walled tube with external radius of 100 mm and wall thickness of 2 mm, is fixed at one end. It is subjected to a compressive force of 1 N acting at a point on the circumference parallel to its length. The maximum normal stress (in kPa) experienced by the structure is

Ans: -2.50 to -2.20