The compound bar carries the axial forces P and 2P. Find the r allowable value of P if the working stresses are 40 ksi for steel and 20 ksi f num, and the total elongation of the bar is not to exceed 0.2 in. 3 ft P 4 ft 2P

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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2.14 The compound bar carries the axial forces P and 2P. Find the maximum
allowable value of P if the working stresses are 40 ksi for steel and 20 ksi for alumi-
num, and the total elongation of the bar is not to exceed 0.2 in.
3 ft
Aluminum
A = 0.6 in.²
E = 10 x 106 psi
4 ft
Steel
A = 0.4 in.²
E = 29 x 106 psi
2P
Transcribed Image Text:2.14 The compound bar carries the axial forces P and 2P. Find the maximum allowable value of P if the working stresses are 40 ksi for steel and 20 ksi for alumi- num, and the total elongation of the bar is not to exceed 0.2 in. 3 ft Aluminum A = 0.6 in.² E = 10 x 106 psi 4 ft Steel A = 0.4 in.² E = 29 x 106 psi 2P
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