Only problem 2.3-3 2700 lb,2.3-3 A steel bar AD (see figure) has a cross-sectionalarea of 0.40 in.² and is loaded by forces P₁1800 lb, and P3 1300 lb. The lengths of the= 60 in., b = 24 in., and c = 36 in.P2segments of the bar are a =(a) Assuming that the modulus of elasticity E30 x 106 psi, calculate the change in length of the bar.Does the bar elongate or shorten?(b) By what amount P should the load P3 be increasedso that the bar does not change in length when the three loadsare applied?=A1602kPROB. 2.3-3B=P1bCP21- P32.3-4 A rectangular bar of length L has a slot in the middlehalf of its length (see figure). The bar has width b, thicknessand modulus of elasticity E. The slot has width b/4.to the axial loads P.(a) Obtain a formula for the elongation of the bar due(b) Calculate the elongation of the bar if the material ishigh-strength steel, the axial stress in the middle15region

The axial forces are as follows-

Answered: 3-3 A steel bar AD (see figure) h- ea…

Engineering

Mechanical Engineering

3-3 A steel bar AD (see figure) h- ea of 0.40 in.2 and is loaded by fo-

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.

Question

Only problem 2.3-3

2700 lb,
2.3-3 A steel bar AD (see figure) has a cross-sectional
area of 0.40 in.² and is loaded by forces P₁
1800 lb, and P3 1300 lb. The lengths of the
= 60 in., b = 24 in., and c = 36 in.
P2
segments of the bar are a =
(a) Assuming that the modulus of elasticity E
30 x 106 psi, calculate the change in length of the bar.
Does the bar elongate or shorten?
(b) By what amount P should the load P3 be increased
so that the bar does not change in length when the three loads
are applied?
=
A
1602
k
PROB. 2.3-3
B
=
P1
b
C
P2
1
- P3
2.3-4 A rectangular bar of length L has a slot in the middle
half of its length (see figure). The bar has width b, thickness
and modulus of elasticity E. The slot has width b/4.
to the axial loads P.
(a) Obtain a formula for the elongation of the bar due
(b) Calculate the elongation of the bar if the material is
high-strength steel, the axial stress in the middle
15
region

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