A round Steel rod of 100 mm diameter is bent into an arc of radius 100m. What is the maximum stress in the rod? Take E = 2×105 N/mm2.

A round Steel rod of 100 mm diameter is bent into an arc of radius 100m. What is the maximum stress in the rod? Take E = 2×105 N/mm2. Correct Answer 100 N/mm2

D = 100m y = 50 mm R = 10 × 103mm By equation of flexure; E/R = f/y f=E/R ×y = 2×105/ 100 × 103× 50 = 100 N/mm2.
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