3. The bar shown below is composed of two pieces, AC and CD. The bar is attached to the wall at point A. The length L = 10 in. The cross sectional areas are: AAC = 4 in² and Acd = 2 in². The Young's Moduli are: EAC =20 Msi and Ecp= 15 Msi Two forces are applied at points B and D: PB = 50 kips and PD= 20 kips. Determine: (a) the reaction force at A (specify → or +) and (b) the deflection of point D (specify → or –). (Hint for (b): Think about how many pieces you must subdivide the rod into.) Ans: RA = 30 kips (+), d=7.9167×10-³ in (+) В C D PB Pp 2L L

3. The bar shown below is composed of two pieces, AC and CD. The bar is attached to the wall at point A. The length L = 10 in. The cross sectional areas are: AAC = 4 in² and Acd = 2 in². The Young's Moduli are: EAC =20 Msi and Ecp= 15 Msi Two forces are applied at points B and D: PB = 50 kips and PD= 20 kips. Determine: (a) the reaction force at A (specify → or +) and (b) the deflection of point D (specify → or –). (Hint for (b): Think about how many pieces you must subdivide the rod into.) Ans: RA = 30 kips (+), d=7.9167×10-³ in (+) В C D PB Pp 2L L

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

3. The bar shown below is composed of two pieces, AC and CD. The bar is attached to the wall
at point A. The length L = 10 in. The cross sectional areas are: AAC = 4 in? and AcD = 2 in?. The
Young's Moduli are: EAC =20 Msi and Ecd= 15 Msi Two forces are applied at points B and D:
PB = 50 kips and PD = 20 kips. Determine: (a) the reaction force at A (specify –→ or +) and (b)
the deflection of point D (specify → or +). (Hint for (b): Think about how many pieces you
must subdivide the rod into.)
Ans: RA = 30 kips (+), dp = 7.9167×10-3 in (E)
A
В
C
D
Pp
L
2L
L

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