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Find elongation in rod? here why rod is elongate while there is no strain 
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Asked by ashutosharnold1998 | 26 Dec, 2019, 13:01: PM
answered-by-expert Expert Answer
Assuming the rod is not moving due to friction, elongation l is related to strss and strain relationship of elsticity of the rod
 
If Y is young's modulus, then we have,  Y = stress/strain =  (F/A) / (l/L)
 
where F is applied force, A is crosssection area of rod , l is elongation and L is length of rod.
 
hence elongation l = ( F L ) / (Y A )
Answered by Thiyagarajan K | 26 Dec, 2019, 15:07: PM

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