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## Homework Statement

A Force stretches a wire by 1.0mm A second wire of the same material has the same cross section and twice the length. How far will it be stretched by the same force?

b) A third wire of the same material has teh same length and twice the diameter as teh first. How far will it be stretched by the same force?

## Homework Equations

F = y(delta)L/L0*A Youngs modulus

## The Attempt at a Solution

1.0mm = 0.01m

I beleive you have to compare the original youngs mudulus with one that is slightly different... I need some guidelines on how to solve this mathematically please. Also, on a side note, is there a differnence between Youngs modulus/shears modulus/bulk modulus? or all they all aprt of the same idea with different concepts, ie(one uses volume)

Thanks