Plzzzz tell mee this quuuuueeee ????

Dear Student
Given that both wires are of equal length and equal cross-sectional area,
the block applies equal tension on both of them.

∴ Lsteel=LCuAsteel=ACuFCu=FSteel                            
Strain of CuStrain of steel = LSteelLSteelLcuLcu=FSteel LSteel Acu YcuASteel YSteel Fcu Lcu                            Using LL=FAYStrain of CuStrain of steel=YcuYSteel=1.3×10112×1011Strain of  steel Strain of Cu=2013=1.54

Hence, the required ratio of the longitudinal strains is 20 : 13.

Regards

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