68. *•TWO rods have the same diameter and are welded together as shown in Figure 9-21. The shorter rod has a Young's modulus of Y,, the longer one has a Young's modulus of Y2. Calculate the combined Young's modulus for the system. Figure 9-21 Problem 68

68. *•TWO rods have the same diameter and are welded together as shown in Figure 9-21. The shorter rod has a Young's modulus of Y,, the longer one has a Young's modulus of Y2. Calculate the combined Young's modulus for the system. Figure 9-21 Problem 68

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 46PQ: Use the graph in Figure P14.46 to list the three materials from greatest Youngs modulus to smallest....

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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

68. **Two rods have the same diameter and are welded
together as shown in Figure 9-21. The shorter rod has a
Young's modulus of Y,, the longer one has a Young's
modulus of Y2. Calculate the combined Young's modulus
for the system.
L2
Figure 9-21 Problem 68

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