ISRO Mechanical & Aerospace 2011 - Question 51

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For a column of length L is fixed at both the ends, corresponding Euler's critical load is

  • A. $\pi² EI / L²$
  • B. $2\pi² EI / L²$
  • C. $3\pi² EI / L²$
  • D. $4\pi² EI / L²$

Answer: D. $4\pi² EI / L²$

Explanation: For fixed-fixed column, effective length $l_e = L/2$. $P = \pi² EI / (L/2)^2 = 4\pi² EI / L²$.

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