ISRO Mechanical & Aerospace 2018 - Question 77

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Topic: Strength of Materials

Euler's critical buckling load for a column fixed at both ends is

  • A. 2*pi²*EI / L²
  • B. pi²*EI / 2L^2
  • C. 4*pi²*EI / L²
  • D. 4*pi²*EI / 4L^2

Answer: C. 4*pi²*EI / L²

Explanation: When both ends are fixed, the effective length Le = L/2. Euler's load Pe = pi²*EI / Le² = 4*pi²*EI / L².

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