Problem 2. [Concepts: Internal forces in 2D and average normal stress] The bars of the trusseach have a cross-sectional area of 1.25 in².a) Determine the average normal stress in each member due to the loading P = 8 kip. Statewhether the stress is tensile or compressive.b) If the maximum average normal stress in any bar is not to exceed 20 ksi, determine themaximum magnitude P of the loads that can be applied to the truss.4 ft4 ft4E0.75 P0

Cross sectional area (A) = 1.25 in.2 a. Determine the average normal stress in each member if P = 8…

Problem 2. [Concepts: Internal forces in 2D and average normal stress] The bars of the tru each have a cross-sectional area of 1.25 in². a) Determine the average normal stress in each member due to the loading P = 8 kip. Sta whether the stress is tensile or compressive. b) If the maximum average normal stress in any bar is not to exceed 20 ksi, determine t maximum magnitude P of the loads that can be applied to the truss. 4 ft 4 ft "4 E 0.75 P 0

Problem 2. [Concepts: Internal forces in 2D and average normal stress] The bars of the tru each have a cross-sectional area of 1.25 in². a) Determine the average normal stress in each member due to the loading P = 8 kip. Sta whether the stress is tensile or compressive. b) If the maximum average normal stress in any bar is not to exceed 20 ksi, determine t maximum magnitude P of the loads that can be applied to the truss. 4 ft 4 ft "4 E 0.75 P 0

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Mechanics of Solids

It is the study of the behavior of solid materials, their characteristics under various circumstances such as variation in external forces, temperature, and other internal factors. It is one of most important study in the field of engineering science, especially chemistry and mechanical engineering. In rigid body, the idealization of the solid body in which deformation is neglected. Deformation is known as the force acting on the solid state system which exerts change in its shape of the body but it continues to be at rest or in a uniform motion but it cannot accelerate. But those solid systems do have elasticity, compressibility and can be bent. This field is very vast since there are wide range of materials around us.

Question

Problem 2. [Concepts: Internal forces in 2D and average normal stress] The bars of the truss
each have a cross-sectional area of 1.25 in².
a) Determine the average normal stress in each member due to the loading P = 8 kip. State
whether the stress is tensile or compressive.
b) If the maximum average normal stress in any bar is not to exceed 20 ksi, determine the
maximum magnitude P of the loads that can be applied to the truss.
4 ft
4 ft
4
E
0.75 P
0

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Step 1: State the given data

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Step 2: Determine the internal force in each member

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Step 3: Taking joint A and E

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Step 4: Taking joint B and C

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Step 5: Determine the average normal stress in each members

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Step 6: Determine the maximum magnitude of P

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