 <!--
 MuJoCo MJCF test file. See http://mujoco.org/book/index.html
  -->
<mujoco>
   <worldbody>
      <body pos="0 0 0">
         <joint type="free"/>
         <geom name="sphere_geom" size="0.05" type="sphere"/>
      </body>
   </worldbody>
</mujoco>