What force is required to stretch a steel wire 1 cm² in cross section to double its length, if stress is directly proportional to strain and the modulus of elasticity is 2x10" N/m?? O a. 2 x 106 N O b. 2 x 107 N O c. 3 x 107 N O d. 3 x 106 N

What force is required to stretch a steel wire 1 cm² in cross section to double its length, if stress is directly proportional to strain and the modulus of elasticity is 2x10" N/m?? O a. 2 x 106 N O b. 2 x 107 N O c. 3 x 107 N O d. 3 x 106 N

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter12: Static Equilibrium And Elasticity

Section: Chapter Questions

Problem 74AP: Two rods, one made of copper and the other of steel, have the same dimensions. If the copper rod...

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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

What force is required to
stretch a steel wire 1 cm² in
cross section to double its
length, if stress is directly
proportional to strain and the
modulus of elasticity is 2x10"
N/m??
O a. 2 x 106 N
O b. 2 x 107 N
O c. 3 x 107 N
O d. 3 x 106 N

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