The Euler buckling load for a column with two pinned supports is given by

$P_{cr}=\frac{{}^{2}EI}{L^2}$

where $E=$ elastic modulus, $I=$ second moment of inertia and $l=$ length $($or height$)$ of the

column. Solve the critical loads for the columns with different support conditions given

below. Assume EI $=50$kPa$*m^4,L=10m[10]$