What is the final length of a 2 m long bar of copper, 0.01 m in diameter,stressed by a 500 kg force? (Ecu=128 GPa).b)If a steel bar of the same diameter has the same force applied to it, howlong must it be to extend the same amount as the copper bar in part (a)?QFor an ASTM grain size of 6, approximately how many grains would therebe per square inch under each of the following conditions?(i) At a magnification of 100X(ii) Without any magnificationa) Briefly explain why HCP metals are typically more brittle than FCC and BCCmetals.b) Two previously undeformed specimens of the same metal are to be plasticallydeformed by reducing their cross-sectional areas (cold work). One has acircular cross section, and the other is rectangular; during deformation thecircular cross section is to remain circular, and the rectangular is to remain assuch. Their original and deformed dimensions are as follows:Circular (diameter, mm)Rectangular (mm)125* 175Original dimensions15.2Deformed dimensions11.475 x 200Which of these specimens will be the hardest after plastic deformation, andwhy?

Answered: Image /qna-images/answer/cefcd8d5-a088-4cf3-90ff-f6955524314a.jpg

b) What is the final length of a 2 m long bar of copper, 0.01 m in diameter, stressed by a 500 kg force? (Ec=128 GPa). If a steel bar of the same diameter has the same force applied to it, how long must it be to extend the same amount as the copper bar in part (a)?

b) What is the final length of a 2 m long bar of copper, 0.01 m in diameter, stressed by a 500 kg force? (Ec=128 GPa). If a steel bar of the same diameter has the same force applied to it, how long must it be to extend the same amount as the copper bar in part (a)?

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

What is the final length of a 2 m long bar of copper, 0.01 m in diameter,
stressed by a 500 kg force? (Ecu=128 GPa).
b)
If a steel bar of the same diameter has the same force applied to it, how
long must it be to extend the same amount as the copper bar in part (a)?
Q
For an ASTM grain size of 6, approximately how many grains would there
be per square inch under each of the following conditions?
(i) At a magnification of 100X
(ii) Without any magnification
a) Briefly explain why HCP metals are typically more brittle than FCC and BCC
metals.
b) Two previously undeformed specimens of the same metal are to be plastically
deformed by reducing their cross-sectional areas (cold work). One has a
circular cross section, and the other is rectangular; during deformation the
circular cross section is to remain circular, and the rectangular is to remain as
such. Their original and deformed dimensions are as follows:
Circular (diameter, mm)
Rectangular (mm)
125* 175
Original dimensions
15.2
Deformed dimensions
11.4
75 x 200
Which of these specimens will be the hardest after plastic deformation, and
why?

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