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## Homework Statement

A steel strip of breadth 50 mm and depth 3 mm needs to be bent around a drum of diameter 4 m. What bending moment is required and what will be the maximum stress produced? The modulus of elasticity of the steel is 210 GPa

## Homework Equations

[tex]

\frac{M}{I} = \frac{\sigma _b}{y} = \frac{E}{R}

[/tex]

## The Attempt at a Solution

I'm able to find the bending moment by finding the second moment of area...

1.05 x10

^{11}x 1.125 x10

^{-10}= 11.8 Nm

however i'm stuck on how to then go on and find the maximum stress