Why do we call the constant of proportionality in hook's law as Young's Modulus?

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The term "Young's Modulus" is used instead of "Young's coefficient" because it reflects the relationship between stress and strain in materials, indicating a material's ability to deform elastically. In engineering, a modulus typically refers to a ratio involving dimensions, while a coefficient is often dimensionless. This distinction highlights that Young's Modulus quantifies how much a material will stretch or compress under a given load, making it a critical parameter in material science. The discussion emphasizes the importance of terminology in accurately describing physical properties. Understanding these differences is essential for proper application in engineering contexts.
perfectz
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Why do we call the constant of proportionality in hook's law as Young's Modulus and not as Young's coefficient? Is there any difference in Modulus and coefficient in engineering context?
 
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perfectz said:
Why do we call the constant of proportionality in hook's law as Young's Modulus and not as Young's coefficient? Is there any difference in Modulus and coefficient in engineering context?

Hi perfectz! :smile:

That's very interesting …

I'll guess that a coefficient is a dimensionless ratio, between two things of the same type …

for example, a coefficient of friction converts one force to another force …

but a modulus changes (or modulates) a lengthy thing to a forcey thing. :redface:

:rolleyes: now i expect people will start throwing counter-examples at me
 

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