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Hullo. Hoping someone can help me with this Q off a statics past paper.

It's one of those things that I'm sure is ridiculously easy but I seem to be missing something (possibly very obvious.)

It's in the attatchment by the way.

my attempt:

strain = extension / o.g.length = 12 / 5000 = 0.003

E = stress / strain

therefore stress = E * strain = 210000 * 0.003 = 630

Which isn't a given answer so must be wrong. Can anyone please point out where I'm going wrong?

It's one of those things that I'm sure is ridiculously easy but I seem to be missing something (possibly very obvious.)

It's in the attatchment by the way.

my attempt:

strain = extension / o.g.length = 12 / 5000 = 0.003

E = stress / strain

therefore stress = E * strain = 210000 * 0.003 = 630

Which isn't a given answer so must be wrong. Can anyone please point out where I'm going wrong?

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