If\[{{P}_{R}}=\]Rankin's Load, \[{{P}_{E}}=\]crippling load by Euler's formula and \[{{P}_{C}}\]crushing load, then Rankin's formula for columns is given as:

\[\frac{1}{{{P}_{E}}}=\frac{1}{{{P}_{R}}}+\frac{1}{{{P}_{C}}}\]

\[\frac{1}{{{P}_{C}}}=\frac{1}{{{P}_{E}}}+\frac{1}{{{P}_{R}}}\]

\[\frac{1}{{{P}_{R}}}=\frac{1}{{{P}_{E}}}-\frac{1}{{{P}_{C}}}\]

\[\frac{1}{{{P}_{R}}}=\frac{1}{{{P}_{E}}}+\frac{1}{{{P}_{C}}}\]

If\[{{P}_{R}}=\]Rankin's Load, \[{{P}_{E}}=\]crippling load by Euler's

1.	If\[{{P}_{R}}=\]Rankin's Load, \[{{P}_{E}}=\]crippling load by Euler's formula and \[{{P}_{C}}\]crushing load, then Rankin's formula for columns is given as:
A.	\[\frac{1}{{{P}_{E}}}=\frac{1}{{{P}_{R}}}+\frac{1}{{{P}_{C}}}\]
B.	\[\frac{1}{{{P}_{C}}}=\frac{1}{{{P}_{E}}}+\frac{1}{{{P}_{R}}}\]
C.	\[\frac{1}{{{P}_{R}}}=\frac{1}{{{P}_{E}}}-\frac{1}{{{P}_{C}}}\]
D.	\[\frac{1}{{{P}_{R}}}=\frac{1}{{{P}_{E}}}+\frac{1}{{{P}_{C}}}\]
Answer» E.

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If\[{{P}_{R}}=\]Rankin's Load, \[{{P}_{E}}=\]crippling load by Euler's formula and \[{{P}_{C}}\]crushing load, then Rankin's formula for columns is given as:

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