
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Transcribed Image Text:Example:3 An aluminum bar 1.8 meters long has a
25 mm square c/s over 0.6 meters of its length and
25 mm circular c/s over other 1.2 meters . How
much will the bar elongate under a tensile load
P=17500 N, if E = 75000 MPa.
17500 N
25 mm sq.sect 25 mm cir..sect
1.2 m
0.6 m
Solution :- 8 = EPL/AE
=17500*600 / (252*75000) +
17500*1200/(0.785*252*75000) =0.794 mm
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