\documentclass[convert=true,convert={convertexe={convert},density=1200,outext=.png}]{standalone}

\input{figsDefs.tex}

\begin{document}
	
\begin{tikzpicture}%
	\fill[blue!20] (-2.2,-1.3) rectangle (2,2.1);
	\draw (-1,-.3) rectangle (1,.3);
	\draw[->,>=latex,thick,forceCol] (0,0) -- +(0,-1) node[left] {$m\vec{g}$};
	\draw[->,>=latex,thick,forceCol,xshift=-3pt] (0,-.3) -- +(0,2) node[left] {$\vec{F}_\text{sous}$};
	\draw[->,>=latex,thick,forceCol,xshift=3pt] (0,.3) -- +(0,-1) node[right] {$\vec{F}_\text{sur}$};
	\draw[->,>=latex,thick,forceCol] (-1,0) -- +(.5,0);
	\draw[->,>=latex,thick,forceCol] (1,0) -- +(-.5,0) node[right,pos=-0.05] {$\vec{F}_\text{lat}$};
	% gravitation
	\draw[->,>=latex,thick,accCol] (1.3,1.5) -- +(0,-1) node[right] {$\vec{g}$};
	% repère
	\draw[->,>=latex,] (-1.3,-1) -- +(0,2.5) node[left] {$\vec{e}_z$};
	\draw (-1.3,-.3)++(-.1,0) -- +(0.2,0) node[left,pos=0] {$h_1$};
	\draw (-1.3,.3)++(-.1,0) -- +(0.2,0) node[left,pos=0] {$h_2$};
\end{tikzpicture}%

\end{document}