Siła w pręcie 1

\begin{aligned} &4\sigma_0\cdot N_1-20\cdot 4\sigma_0=0 && N_1=20 \end{aligned}

Siła w pręcie 2

\begin{aligned} &4\sigma_0\cdot N_2-20\cdot 4\sigma_0=0 && N_2=20\\ \end{aligned}

\begin{aligned} &4\sigma_0\cdot 10+4\sigma_0\cdot N_3-20\cdot 4\sigma_0=0 && N_3=10\\ \end{aligned}

\begin{aligned} &-20\cdot 4\sigma_0-N_4\frac{\sqrt2}{2}\cdot 4\sigma_0=0 &&N_4=-20\sqrt2\\ \end{aligned}

\begin{aligned} &4\sigma_0\cdot N_5=0 && N_5=0\\ \end{aligned}

\begin{aligned} &4\sigma_0\cdot N_6\frac{\sqrt2}{2}=0 && N_6=0\\ \end{aligned}

\begin{aligned} &-4\sigma_0\cdot N_7=0 && N_7=0\\ \end{aligned}

\begin{aligned} &-4\sigma_0\cdot 20+4\sigma_0\cdot N_8+4\sigma_0\cdot 15=0 && N_8=5\\ \end{aligned}

\begin{aligned} &4\sigma_0\cdot 15+4\sigma_0\cdot N_9=0 && N_9=-15\\ \end{aligned}