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GATE Exam Questions - Engineering

Q1:

Horizontal stiffness coefficient, K11 of bar ab is given by :

A
A E/l 2

B A E/2 1

C A E/l

D 2 A E/l

ANS:A -

A E/l 2

Horizontal force = p*2^1/2.
Horizontal displacement = δ/2^1/2.
K11 = h.f/h.d.
δ = pl/AE,
K11 = 2AE/l.