I am having some problems in concluding a picture. This is my code:
\documentclass[border={10pt}]{standalone}
\usepackage{tikz}
\usetikzlibrary{patterns}
\begin{document}
\begin{tikzpicture}[thick,>=latex,->]
\begin{scope}
\clip(-5,2) rectangle (5,-5);
\filldraw[white] (-4.3,4.3) rectangle (4.3,0);
\draw[double distance=1.6mm] (0,0) -- (3,-3) node[midway,xshift=4mm,yshift=2mm]{};
\draw[double distance=1.6mm,dashed] (0,0) -- (0,-4.24) node[midway,xshift=4mm,yshift=2mm]{};
\draw[draw=black,fill=white,dashed] (0,-4.24) circle circle (.3cm);
\draw[double distance=1.6mm,dashed] (0,0) -- (-3,-3) node[midway,xshift=4mm,yshift=2mm]{};
\draw[draw=black,fill=white,dashed] (-3,-3) circle circle (.3cm);
\draw[fill=white] (-1.2,1.0) -- (-.5,0) arc(180:360:0.5) -- (1.2,1.0) -- cycle;
\draw[draw=black,fill=white] (0, 0) circle circle (.3cm);
\draw[draw=black,fill=white] (3,-3) circle circle (.3cm);
\draw[pattern=north east lines] (-1.4,1.3) rectangle (1.4,1);
\node at (.3,-.8) {$\theta_{d}$};
\end{scope}
\end{tikzpicture}
\end{document}
I get this result:
But I want to have something like this:
And I want to remove the horizontal grey lines from the linear part of the two "dashed" pendulum. Can you help me?