Answered: 1. A wire of radius 0.8 mm and length…

1. A wire of radius 0.8 mm and length of 2.5m is stretched by a force of 49N. calculate the stress, strain, and elongation produced in the body if the modulus for wire is 2.1x10¹¹ N/m².

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter14: Static Equilibrium, Elasticity, And Fracture

Section: Chapter Questions

Problem 52PQ

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Concept explainers

Mechanical Properties of Solids

There are three types of matter- solid, liquid and gas. Out of them, solids have a rigid shaped and size. The intermolecular forces of attractions in solids are greatest. Mechanical properties are the physical properties of a material which it shows, when it is provided with certain amount of force or load. These properties are to be kept in mind for various purposes. When a force is applied to an object, the object may or may not get deformed depending upon its elastic property. But every time the object develops a restoring force against the force applied. This is commonly known as stress. If the object changes its dimensions due to the force applied it develops strain ( which is the ratio of change in dimension to the original dimension).

Question

1. A wire of radius 0.8 mm and length of 2.5m is stretched by a force of 49N. calculate the
stress, strain, and elongation produced in the body if the modulus for wire is 2.1x101¹¹ N/m².

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