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Calculate the force (in N) a piano tuner applies to stretch a steel piano wire 8.70 mm, if the wire is originally 0.830 mm in diameter and 1.35 m long. Young's modulus for steel is 210 x 109 N/m2.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter5: Further Applications Of Newton's Laws: Friction, Drag, And Elasticity

Section: Chapter Questions

Problem 36PE: Calculate the force a piano tuner applies to stretch a steel piano wire 8.00 mm, if the wire is...

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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

Calculate the force (in N) a piano tuner applies to stretch a steel piano wire
8.70 mm, if the wire is originally 0.830 mm in diameter and 1.35 m long.
Young's modulus for steel is 210 x 109 N/m2.
x N
760

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