1.

Which of the mentioned below is the Rankine’s formula?

A. Pcr=\(\frac{A}{1+a(\frac{L}{K_{xx}})}\)
B. Pcr=\(\frac{\sigma_cA}{1+a(\frac{L}{K_{xx}})}\)
C. Pcr=\(\frac{A^2}{1+a(\frac{L}{K_{xx}})}\)
D. Pcr=\(\frac{\sigma_cA^2}{1+a(\frac{L}{K_{xx}})}\)
Answer» C. Pcr=\(\frac{A^2}{1+a(\frac{L}{K_{xx}})}\)


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