Elastic Modulus - Probably a dumb question but I can't do it

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To calculate stress and strain for the elastic band experiment, the cross-sectional area of the band is essential. Stress (σ) is determined using the formula σ = F/A, where F is the force applied (weight in Newtons) and A is the cross-sectional area. Strain (ε) is calculated as the change in length divided by the original length. Young's modulus (E) can then be found using the relationship E = σ/ε. Accurate calculations require both the cross-sectional area and proper conversion of weights to force.
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WEIGHT (kg) Length (m) How much it extended (m) STRESS STRAIN
0.1 0.11 0.4
0.2 0.13 0.6
0.3 0.18 0.11

I did an experiment in physics for youngs modulus, I need to workout the stress and strain on an elastic band with weights attached, but I have no idea how.

Could anyone please help me to workout the stress and strain from the data I got from the experiment and please explain how

Regards

Sam
 
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Gallows said:
WEIGHT (kg) Length (m) How much it extended (m) STRESS STRAIN
0.1 0.11 0.4
0.2 0.13 0.6
0.3 0.18 0.11

I did an experiment in physics for youngs modulus, I need to workout the stress and strain on an elastic band with weights attached, but I have no idea how.

Could anyone please help me to workout the stress and strain from the data I got from the experiment and please explain how

Regards

Sam

Ok, I'm guessing that your columns are respectively weight, length and how much it extended? Anyways to determine E (Young's modulus) we're going to have to know the cross sectional area of the specimen. E=sigma/epsilon so we need to calculate stress with the formula sigma=F/A. Anyways I'm just a first year eng student and I haven't learned much in my materials class yet but as far as I know you're going to need the cross sectional area
 

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