Acylindrical specimen of a hypothetical metal alloy is stressed in compression. if its original and final diameters are 30.00 and 30.04 mm, respectively, and its final length is 105.20 mm, compute its original length if the deformation is totally elastic. the elastic and shear moduli for this alloy are 65.5 and 25.4 gpa, respectively. express the answer in mm to five significant figures.

105.70 mm

Explanation:

Poisson’s ratio, v is the ratio of lateral strain to axial strain.

E=2G(1+v) where E is Young’s modulus, v is poisson’s ratio and G is shear modulus

Since G is given as 25.4GPa, E is 65.5GPa, we substitute into our equation to obtain poisson’s ratio

Original length

Where is final diameter, is original diameter, is final length and is original length.

Therefore, the original length is 105.70 mm