- #1

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**[SOLVED] More hookes law question**

## Homework Statement

i cant get the equation to work out to the right answer of 110-130Gpa

## Homework Equations

E=kL/A

k-1.45

L=2metres

A = 0.292cm

## The Attempt at a Solution

i get 0.0099Gpa

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- Thread starter groom03
- Start date

- #1

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i cant get the equation to work out to the right answer of 110-130Gpa

E=kL/A

k-1.45

L=2metres

A = 0.292cm

i get 0.0099Gpa

- #2

G01

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- #3

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I've got to work out the Youngs modulus of a meterial using the equation k=EA/L which rearrnged to E=kL/A i know k because its the gradient of a force extension graph i made, A is the x-sectional area of the wire and L is original length of the wire. wiki says the youngs modulus of copper 110-130 Giga Pascals but i get something stupid like 0.009Gpa.

- #4

G01

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- #5

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- #6

G01

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Good to hear. Sometimes it always boils down to something simple like the units.

- #7

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Thanks for your help

- #8

G01

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Anytime.

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