Tensile strength.

1. I think you mean tensile stress, which is equal to force divided by cross-sectional area
The force is the weight of the mass, W = mg
Cross-sectional area, A = pi x r^2

2. Strain equals the extension divided by original length

3. Youngs modulus equals tensile stress divided by tensile strain

Thanks a lot.
Though I want to find out why you think (1) should be tensile stress and not strength?

1. I think you mean tensile stress, which is equal to force divided by cross-sectional area
The force is the weight of the mass, W = mg
Cross-sectional area, A = pi x r^2

2. Strain equals the extension divided by original length

3. Youngs modulus equals tensile stress divided by tensile strain

1. I think you mean tensile stress, which is equal to force divided by cross-sectional area
The force is the weight of the mass, W = mg
Cross-sectional area, A = pi x r^2

2. Strain equals the extension divided by original length

3. Youngs modulus equals tensile stress divided by tensile strain

Glad to help

Because tensile strength is something different which can’t be calculated with the given values and you need to know tensile stress to calculate the Young’s modulus.

But since you said the force is W=mg can’t we use that to find young modulus?

Yes, but finding the tensile stress is the step in between.

I understand,so can we try to solve this using tensile strength? And see how it’ll go?

I understand,so can we try to solve this using tensile strength? And see how it’ll go?