A steel bar 110 mm long and having a square cross section 22 mm on an edge is pulled in tension with a load of 89,000 N, and experiences an elongation of 0.10 mm. Assuming that the deformation is entirely elastic, calculate the elastic modulus of the steel.

Elastic modulus of steel  = 202.27 GPa

Explanation:

given data

long = 110 mm = 0.11 m

cross section 22 mm  = 0.022 m

load = 89,000 N

elongation = 0.10 mm = 1 × m

solution

we know that Elastic modulus is express as

Elastic modulus =    ................1

here stress is

Stress =       .................2

Area = (0.022)²

and  

Strain =       .............3

so here put value in equation 1 we get

Elastic modulus =  

Elastic modulus of steel = 202.27 × Pa

Elastic modulus of steel  = 202.27 GPa

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