All the bars in the given truss are elastic with Young's modulus $200 \mathrm{GPa}$, and have identical cross-sections with moment of inertia $0.1 \mathrm{~cm}^{4}$. The lowest value of the load $P$ at which the truss fails due to buckling is_________ $\quad \mathrm{kN}$ (round off to the nearest integer).

All the bars in the given truss are elastic with Young's modulus $200 \mathrm{GPa}$, and have identical cross-sections with moment of inertia $0.1 \mathrm{~cm}^{4}$. The lowest value of the load $P$ at which the truss fails due to buckling is_________ $\quad \mathrm{kN}$ (round off to the nearest integer).

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