If a wire is stretched to double of its length.What will be the strain

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Discussion Overview

The discussion revolves around the concept of strain in a wire when it is stretched to double its original length. Participants explore the mathematical definition of strain and attempt to clarify the correct application of the formula.

Discussion Character

  • Technical explanation, Conceptual clarification, Homework-related

Main Points Raised

  • One participant asks for the mathematical proof of strain when a wire is stretched to double its length.
  • Another participant provides the basic definition of strain as the change in length divided by the original length.
  • A participant calculates the change in length as 2l and the original length as l, concluding that the strain is 2, while asserting that the correct answer should be 1.
  • A later reply challenges this calculation, clarifying that the change in length should be calculated as the final length minus the initial length, suggesting that the participant reevaluate their equation.
  • One participant expresses gratitude for the clarification and indicates understanding after the correction.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the calculation of strain, with one participant initially asserting a strain of 2 and another correcting this to suggest a different interpretation. The discussion remains unresolved regarding the correct application of the formula.

Contextual Notes

There are limitations in the initial definitions and calculations presented, particularly regarding the interpretation of change in length and the application of the strain formula.

qazi75
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If a wire is stretched to double of its length.What will be the strain of wire?I need to prove it mathematically that how it becomes 1.
 
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Welcome
What is the basic definition of strain?
Look it up and put the values for initial and final length in the formula.
 


Thanks you sir.
Basic definition is:Change in length/original length.So change in length is 2l.And original length is l.So it becomes 2.While the correct answer to this statement is 1.
 


You've got something messed up here.

The CHANGE in length. So, what is the final length? 2I. What's the initial? I.
CHANGE = FINAL LENGTH - INITIAL LENGTH
2I is not the change. Keep that in mind and try the equation again. See what you get.
 


Thanks you very much!Got it.
 

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