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

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SUMMARY

The discussion centers on calculating the change in length using stress, Young's modulus, and initial length without direct force and area units. The formula for change in length is confirmed as change of length = strain x length. The user expresses a need for clarity on the relationship between stress and strain, as well as a desire for comprehensive formulas related to these concepts. References to Young's modulus and stress mechanics are provided for further understanding.

PREREQUISITES
  • Understanding of stress and strain in materials science
  • Familiarity with Young's modulus and its significance
  • Basic knowledge of dimensional analysis in SI units
  • Ability to interpret mechanical formulas and their applications
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  • Research the relationship between stress, strain, and Young's modulus
  • Learn about the derivation and application of the formula for change in length
  • Explore advanced topics in material mechanics, including elastic and plastic deformation
  • Study the implications of dimensional analysis in engineering calculations
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Engineers, materials scientists, and students studying mechanics who need to understand the relationship between stress, strain, and material deformation.

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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