1. A steel bar 8 m long, hanging vertically supports a tensile load of 2500 N. Neglecting the weight of the bar, calculate the required diameter so that the axial stress will not exceed 130 MPa and the total elongation is not to exceed 6 mm. Use E-200 GPa Answer: D = 4.95 mm

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
Question
1. A steel bar 8 m long, hanging vertically supports a tensile load of 2500 N. Neglecting the weight of the
bar, calculate the required diameter so that the axial stress will not exceed 130 MPa and the total
elongation is not to exceed 6 mm. Use E-200 GPa
Answer: D = 4.95 mm
2. A bar having a length of 5 in. and cross-sectional area of 0.8 in² is subjected to an axial force of 8000
Ib. If the bar stretches 0.003 in., determine the modulus of elasticity of the material. Assume that the
material behave elastically.
Answer: E= 16.67 x 10" ksi
8000 lb
8000 lb
-5 in-
Transcribed Image Text:1. A steel bar 8 m long, hanging vertically supports a tensile load of 2500 N. Neglecting the weight of the bar, calculate the required diameter so that the axial stress will not exceed 130 MPa and the total elongation is not to exceed 6 mm. Use E-200 GPa Answer: D = 4.95 mm 2. A bar having a length of 5 in. and cross-sectional area of 0.8 in² is subjected to an axial force of 8000 Ib. If the bar stretches 0.003 in., determine the modulus of elasticity of the material. Assume that the material behave elastically. Answer: E= 16.67 x 10" ksi 8000 lb 8000 lb -5 in-
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