A mild steel wire of radius 0.5 mm and length 3 m is stretched by a force of 49 N. Calculate for the longitudinal stress, longitudinal strain, and elongation produced in the body if Young’s modulus for steel is E = 2.1 x 1011 N/m2.

A mild steel wire of radius 0.5 mm and length 3 m is stretched by a force of 49 N. Calculate for the longitudinal stress, longitudinal strain, and elongation produced in the body if Young’s modulus for steel is E = 2.1 x 1011 N/m2.

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter7: Length And Length-related Variables In Engineering

Section: Chapter Questions

Problem 43P: A 10 cm long rectangular bar (when subjected to a tensile load) deforms by 0.1 mm. Calculate the...

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Material Properties

Construction in civil engineering demands high strength, durability, and longevity. These targets can be achieved by better design and analysis, along with the correct choice of materials. Different materials have different properties and hence, they respond and performs differently under the various condition of external loadings. It is therefore a critical task of an engineer to select the right material based on the property that the material is supposed to function in real-time. When speaking about the property, there are different categories of material properties like chemical property, physical property, mechanical property, electrical property, magnetic property, thermal property, etc. These material properties form the basis of material selection in various applications.

Question

A mild steel wire of radius 0.5 mm and length 3 m is stretched by a force of 49 N. Calculate for the longitudinal stress, longitudinal strain, and elongation produced in the body if Young’s modulus for steel is E = 2.1 x 10¹¹ N/m².

Answers:

(6.238 x 10⁷ N/m², 2.970 x 10^-4 m/m, 0.891 mm)

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