2.3-3 A steel bar AD (see figure) has a cross-sectionalarea of 0.40 in.? and is loaded by forces P1 = 2700 lb, P2 =1800 lb, and P3 = 1300 lb. The lengths of the segments ofthe bar are a = 60 in., b = 24 in., and c = 36 in.(a) Assuming that the modulus of elasticity E30 x 10° psi, calculate the change in length ô 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 threeloads are applied?PA P2IABy-aof

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2.3-3 A steel bar AD (see figure) has a cross-sectional area of 0.40 in.² and is loaded by forces P, = 2700 lb, P2 = 1800 lb, and P3 = 1300 lb. The lengths of the segments of the bar are a = 60 in., b = 24 in., and c = 36 in. (a) Assuming that the modulus of elasticity E 30 x 10° psi, calcuklate the change in length 8 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? P

2.3-3 A steel bar AD (see figure) has a cross-sectional area of 0.40 in.² and is loaded by forces P, = 2700 lb, P2 = 1800 lb, and P3 = 1300 lb. The lengths of the segments of the bar are a = 60 in., b = 24 in., and c = 36 in. (a) Assuming that the modulus of elasticity E 30 x 10° psi, calcuklate the change in length 8 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? P

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

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2.3-3 A steel bar AD (see figure) has a cross-sectional
area of 0.40 in.? and is loaded by forces P1 = 2700 lb, P2 =
1800 lb, and P3 = 1300 lb. The lengths of the segments of
the bar are a = 60 in., b = 24 in., and c = 36 in.
(a) Assuming that the modulus of elasticity E
30 x 10° psi, calculate the change in length ô 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?
PA P2
IA
By
-a
of

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