Question

A mild steel fleet of width 120 mm and thickness 10 mm is bent into an arc of a circle of radius 10 m by applying a pure moment m. If e is 2 x 105 n/mm2, then the magnitude of the pure moment m will be

Answer 1

Answer:

2 x 10~5

Explanation:

Width of steel fleet = 120 mm (Given)

Thickness of steel fleet = 10mm (Given)

Circle of radius = 10m (Given)

M/I = E/R

Therefore, M = EI/R

R = 10000mm

I = 1/12×120×10³mm4 = 10~4mm4

E = 2 x 10~5 n/mm²

M = 2 x 10~5× 10~4/ 10000

= 2 x 10~5

Thus, the magnitude of the pure moment m will be 2 x 10~5