1. a) The moment of inertia of a rectangle about its base is 1.44 x 10° mm". Find the depth of the rectangle, if the width of the rectangle is 20mm. b) A wire of length 500 mm is stretched to double its length. Calculate the longitudinal strain produced in the wire.

1. a) The moment of inertia of a rectangle about its base is 1.44 x 10° mm". Find the depth of the rectangle, if the width of the rectangle is 20mm. b) A wire of length 500 mm is stretched to double its length. Calculate the longitudinal strain produced in the wire.

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 66PQ: A steel cable 2.00 m in length and with cross-sectional radius 0.350 mm is used to suspend from the...

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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) The moment of inertia of a rectangle about its base is 1.44 x 10° mm". Find the depth of the
rectangle, if the width of the rectangle is 20mm.
b) A wire of length 500 mm is stretched to double its length. Calculate the longitudinal strain
produced in the wire.

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