A wooden beam is fabricated by nailing together three boards as shown. The boards have dimensions of b1 = 11 in., d1 = 2.1 in., b2 = 2.1 in., d2 = 10 in., b3 = 6 in., and d3 = 2.1 in. (e) If a bending moment applied about the z axis produces a tension normal stress of σx = 580 psi at the bottom of the cross section, determine the compression normal stress produced at the top of the cross section.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A wooden beam is fabricated by nailing together three boards as shown.  The boards have dimensions of b1 = 11 in., d1 = 2.1 in., b2 = 2.1 in., d2 = 10 in., b3 = 6 in., and d3 = 2.1 in.

(e) If a bending moment applied about the z axis produces a tension normal stress of σx = 580 psi at the bottom of the cross section, determine the compression normal stress produced at the top of the cross section.

 

b1
Nail A
di
d2
b2
dz
Nail B
b3
Transcribed Image Text:b1 Nail A di d2 b2 dz Nail B b3
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