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9th Edition

Barry J. Goodno + 1 other

Publisher: Cengage Learning

ISBN: 9781337093347

Chapter 7, Problem 7.2.23P

Textbook Problem

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: A gusset plate on a truss bridge is in *plane stress *with normal stresses *a _{x}*and

angles *6 = *32° and *9 = *78° from the *x *axis, the normal stress is 4200 psi in tension.

If the stress *tr _{x}*equals 2650 psi in tension, what are the stresses

To determine

The normal stress acting on the element in the y-direction.

The shear stress acting on the element.

**Given information:**

The angle for the stresses on the inclined element is

Write the expression for normal stress acting on the element.

Here, normal stresses acting on the body along x-direction is

**Calculation:**

Substitute

Substitute

Mechanics of Materials (MindTap Course List)

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