Two steel truss members, $\mathrm{AC}$ and $\mathrm{BC}$, each having cross sectional area of $100 \mathrm{~mm}^{2}$, are subjected to a horizontal force $\mathbf{F}$ as shown in figure. All the joints are hinged.

The maximum force $\mathbf{F}$ in $k N$ that can be applied at $C$ such that the axial stress in any of the truss members DOES NOT exceed $100 \mathrm{MPa}$ is

(A) 8.17

(B) 11.15

(C) 14.14

(D) 22.30

Two steel truss members, $\mathrm{AC}$ and $\mathrm{BC}$, each having cross sectional area of $100 \mathrm{~mm}^{2}$, are subjected to a horizontal force $\mathbf{F}$ as shown in figure. All the joints are hinged.

The maximum force $\mathbf{F}$ in $k N$ that can be applied at $C$ such that the axial stress in any of the truss members DOES NOT exceed $100 \mathrm{MPa}$ is

(A) 8.17

(B) 11.15

(C) 14.14

(D) 22.30

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