(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I’m doing some basic young’s modulus homework and I think I’ve solved it but I want other people to give their answers to see if the match my own. Its young are of copper wire.

2. Relevant equations

E = stress over strain

Stress = applied force (F) over Cross sectional area (A)

Strain = Extension (e) over Original length (Lo)

A = 0.27mm

F = mxg

Lo = 1.788m

e = variable

My table of results are:

M / kg e / mm

0.100 0.45

0.200 0.94

0.300 1.40

0.400 1.97

0.500 2.46

0.600 3.29

0.700 4.12

0.800 5.00

0.900 6.36

1.000 8.22

3. The attempt at a solution

I’ve worked it out with 0.100kg

M (0.100) x g (9.81) = 0.981 so F = 0.981

Pi x 0.27 squared over 4 = 0.05725566 so A = 0.05725566

So stress = 17.13371733038794867967

e = 0.45

Lo = 1.788

So strain = 0.25167785234899

Young’s Modulus = 68.0779701927423389726993185

I know I’m going wrong somewhere so any help would be appreciated

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# Homework Help: Youngs Modulus of copper wire experiment

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