Answer: the normal longitudinal strain is most nearly 2.5 x 10⁻⁴ mm/mm
Explanation:
Given the data in the question,
we know that;
Normal longitudinal strain = elongation / original length
so we substitute our values
Normal longitudinal strain = 0.5 mm / (2 m x 1000) mm
= 0.5 mm / 2000 mm
= 2.5 x 10⁻⁴ mm/mm
Therefore the normal longitudinal strain is most nearly 2.5 x 10⁻⁴ mm/mm
