Исходники иллюстрации

\documentclass[tikz]{standalone}\input{pre.tex}\begin{document}\begin{tikzpicture}[
    force/.style={>=latex,draw=blue,fill=blue},
    % axis/.style={densely dashed,gray,font=\small},
    axis/.style={densely dashed,black!60,font=\small},
    interface/.style={
        pattern = north east lines,
        draw    = none,
        pattern color=gray!60,          
    },
    cargo/.style={
        rectangle,
        fill=magenta!40,
        draw=black!50,
        inner sep=2.5mm,
    },
    spring/.style={
        decoration={
            aspect=0.3, 
            segment length=.8mm, 
            amplitude=2mm,
            coil},
        decorate,
        draw=magenta!25
    }
]
        \draw[axis,->] (-1,0.5) node[left]{$W_\text{п}=0$} -- ++ (7,0) node[right]{$+x$};
        % \draw[interface] (-0.25,-0.25) rectangle ++(-0.25,0.7);
        \draw[interface] (-0.5,-0) rectangle ++(6,-0.25);
        \draw[thick] (-0.5, -0) -- ++(6,0);

        \draw[fill=magenta!10] (0,0) -- (0,0.5) -- (2,0.5) arc (-90:0:1cm) -- (3.5,1.5) -- (4.5,0.4) -- (4.5,0) -- cycle;

        \draw[fill=magenta!30] (0.25,0.5) rectangle ++(0.5,0.5) node[above, xshift=-0.6em] {$m$};

        \draw[force,->] (0.5,0.72) --++(1,0) node[right] {$\vec{v}_0$};

        \draw (3.5,0.5) node {$M$};



\end{tikzpicture}\end{document}