\ANG{
\parbox[t]{0.7\textwidth}{
   Berechne die Beschleunigung, die $m_2$ erf"ahrt, wenn
   \\ $m_1=98{,}0\,\mathrm{g}$ und $m_2=102\,\mathrm{g}$ ist.
}\hspace{0.05\textwidth}
\parbox[t]{0.25\textwidth}{
   \begin{center}
   \psset{unit=0.75cm}
      \begin{pspicture}(1.5,7.5)
         \psframe[linestyle=none,fillstyle=gradient,gradbegin=lightgray,gradend=black,fillcolor=black,linewidth=1pt](-1.25,7.5)(1.25,8)
         \psline[linewidth=3pt](-1.24757,7.5)(1.24757,7.5)
         %% Masse links
         \psframe[fillstyle=solid, fillcolor=lightgray,linewidth=1pt](-1,0)(0,1)
         \psline(-0.5,1)(-0.5,6.8)
         \rput(-0.5,0.5){\footnotesize $m_1$}
         %% Masse rechts
         \psframe[fillstyle=solid, fillcolor=lightgray,linewidth=1pt](0,3)(1,4)
         \psline(0.5,4)(0.5,6.8)
         \rput(0.5,3.5){\footnotesize $m_2$}
         \rput{0}(0,6.8){
            %% Lose Rolle
            \pscircle[fillstyle=solid,fillcolor=lightgray,linecolor=black](0,0){0.5}
            \psframe[fillstyle=solid,fillcolor=gray,linewidth=1.5pt](-0.2,-0.65)(0.2,0.65)
            \pscircle[fillstyle=solid,fillcolor=black,linecolor=white](0,0){0.1}
         }
      \end{pspicture}
   \end{center}
}}
\LSG{
$\left(m_2+m_1\right)\,a=\left(m_2-m_1\right)\,g\quad\Rightarrow\quad a=\dfrac{m_2-m_1}{m_2+m_2}\,g=0{,}0200\,g=0{,}196\,\mathrm{m}\,\mathrm{s}^{-2}$
}
