Example 4

A steel rod with a diameter of d=32 mm and a length of l=35 cm was subjected to tensile stress with a force of P=135 kN. The strain measurements showed a decrease in diameter of \( \Delta d=0.0062\ mm\) and an elongation of \( \Delta l=0.04 mm \) over a measured section with a length of L=5 cm. Calculate the modulus of elasticity E and Poisson's ratio \( \nu \) for the material of the rod.


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