How can you calculate change in length without force and area units?

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Homework Help Overview

The discussion revolves around calculating the change in length of a material using stress and Young's modulus, without having the force and area units. Participants are exploring the relationship between these concepts in the context of material deformation.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are questioning the meaning of stress and its units, as well as the relationship between strain and change in length. There is a discussion about the necessity of units in the calculations and the relevance of Young's modulus in the context of the problem.

Discussion Status

The discussion is ongoing, with various interpretations being explored regarding the relationship between stress, strain, and change in length. Some participants are seeking clarification on the units and their importance, while others are attempting to connect the concepts without providing definitive answers.

Contextual Notes

There is a noted absence of specific measurements and units, which some participants question. The original poster emphasizes that they are looking for a conceptual understanding rather than numerical values.

chriscarson
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Homework Statement
Change of length formula when you don t have the AREA and the FORCE unit.
Relevant Equations
Change of length formula when you don t have the AREA and the FORCE unit.
I have the STRESS , YOUNG S MODULUS ,and the LENGTH .
How can you discover the CHANGE IN LENGTH when you don t have the FORCE and AREA unit ?
 
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What stress do you have ? What does it mean ?
 
I meant I have the unit of the stress 4 x 10 2 (the 2 is little on the 10 )
 
I don't see no units ?
 
I just asked the question without giving the measurements .I think it s enough .
 
Good. Then you are all set.
 
Is it change of length = strain x length ?
 
With units I mean things that tell you the dimension in terms of kg, m and s, the so-called SI units.
I don't care about the numerical value, that's only needed when you need to calculate.
 
  • #10
ok thanks , I wish to have all the formulas possible to need in any case .
 

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