Исходники иллюстрации

\documentclass[tikz]{standalone}\input{pre.tex}\begin{document}\begin{tikzpicture}
    \clip (-6,-1) rectangle (6,4.25);

    \draw (0,0) circle (2cm);
    \fill[magenta] (0,0) circle (2pt) coordinate (c);
    \fill[magenta] (0,3) circle (2pt) coordinate (o);
    \draw (0,3) circle (1cm);

    \draw[axis] (0,0) circle (3cm);
    \draw[axis] (0,0) -- (0,5);

    \draw (0,0)  ++(150:3) coordinate (oo) circle(1cm);
    \draw[axis,-<] (0,0) -- ++(150:5)node[left] {$-n$};
    \draw[axis] (0,0) -- (0,5);
    \draw[axis] (oo) -- ++(0,3.5);
    \draw[axis] (oo) -- ++(0,-3.5) coordinate (phi);
    \draw[force,->] (0,0) ++(150:2) -- ++ (150:1.5)node[above] {$\vec{N}$};

    \draw[force,->] (0,0) ++(150:3) -- ++ (240:1.5)node[below] {$\vec{v}$};

    \draw[force,->] (oo) -- ++ (0,-1.5) node[below] {$m\vec{g}$};
    \fill[magenta] (oo) circle (2pt);


    \draw pic["$\phi$",draw=magenta,<-,angle eccentricity=1.5,angle radius=.5cm] {angle=phi--oo--c};   
    
    \draw pic["$\phi$",draw=magenta,<-,angle 
    eccentricity=1.5,angle radius=0.5cm] {angle=o--c--oo};   

    \lineann[6]{90}{1.5}{$h^*=h_0\cdot\cos\phi$}
    \lineann[-5]{90}{3}{$h_0=r+R$}

    \contourlength{2mm}
    \draw (2,0) node[] {\contour{white}{$W_\text{п}=0$}};

\end{tikzpicture}\end{document}