Acopper wire has a radius of 4.1 mm. when forces of a certain equal magnitude but opposite directions are applied to the ends of the wire, the wire stretches by 5.0×10−3 of its original length. what is the tensile stress on the wire? young's modulus for copper is 11×1010pa.

tensile stress = 55 x 10⁷ Pa

Explanation:

given,

radius of the copper wire = 4.1 mm = 0.0041 m

the wire stretches = 5.0×10⁻³ l

   l = original length

young's modulus of copper = 11 x 10¹⁰ Pa

strain =

tensile stress = young's modulus x strain

tensile stress = 11 x 10¹⁰ x 5.0×10⁻³

tensile stress = 55 x 10⁷ Pa

The tensile stress on the wire is equal to 55 x 10⁷ Pa

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