Answered: Cast iron tube =3 mm Plastic bar Sp=…

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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A square plastic bar (length LP,side dimension sp=193 mm) is inserted inside a hollow.square cast iron tube (length Le

= 400 mm. side sc=200 mm,and thickness tc=3 mm).

(A)What is the required initial length L,of the plastic bar so that.ilcn it is compressed by some force the final length of bar and tube are equal to length L and,at the same time, the gap beten plastic bar and cast iron tube is closed?

(B) Compare initial and final volumes for the plastic bar. Assume that E = 170 GP E,= 2.1GPa.v = 0.3.and = 0.4.

Cast iron tube
=3 mm
Plastic bar
Sp= 193 mm
Se 200 mm
Force P on
plastic bar
- Inner plastic
bar
Outer cast iron
bar
PROBLEM 1.7-4

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