Rigid bar ABCD is loaded and supported as shown. Steel [E = 28600 ksi] bars (1) and (2) are unstressed before the load P is applied. Bar (1) has a cross-sectional area of 0.67 in.² and bar (2) has a cross-sectional area of 0.32 in.2. After load P is applied, the strain in bar (1) is found to be 810 μe. Assume L₁-51 in., L₂=78 in., a-31 in., b-29 in., and c-37 in. Determine: (a) the stresses in bars (1) and (2). (b) the vertical deflection vp of point D on the rigid bar. (c) the load P. (1) L2 ksi. Answers: (a) σ₁ (b) VD= (c) P = i LA a S b N ksi, 0₂ = in. kips.

Rigid bar ABCD is loaded and supported as shown. Steel [E = 28600 ksi] bars (1) and (2) are unstressed before the load P is applied. Bar (1) has a cross-sectional area of 0.67 in.² and bar (2) has a cross-sectional area of 0.32 in.2. After load P is applied, the strain in bar (1) is found to be 810 μe. Assume L₁-51 in., L₂=78 in., a-31 in., b-29 in., and c-37 in. Determine: (a) the stresses in bars (1) and (2). (b) the vertical deflection vp of point D on the rigid bar. (c) the load P. (1) L2 ksi. Answers: (a) σ₁ (b) VD= (c) P = i LA a S b N ksi, 0₂ = in. kips.

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

Rigid bar ABCD is loaded and supported as shown. Steel [E = 28600 ksi] bars (1) and (2) are unstressed before the load P is applied. Bar
(1) has a cross-sectional area of 0.67 in.² and bar (2) has a cross-sectional area of 0.32 in.2. After load P is applied, the strain in bar (1) is
found to be 810 μe. Assume L₁-51 in., L₂=78 in., a-31 in., b-29 in., and c-37 in. Determine:
(a) the stresses in bars (1) and (2).
(b) the vertical deflection vp of point D on the rigid bar.
(c) the load P.
(2)
(1)
L₁
B
Answers:
(a) o₁ =
(b) VD=
(c) P= i
i
i
L2
b
ksi, 0₂
in.
kips.
с
=
Mi
D
ksi.

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