HELP!! sydney ties two deflated balloons to the end of a dowel. she then hangs up the dowel up by the string in the middle and adjust it so that the dowel hangs level. What has Sydney made?

HELP Sydney Ties Two Deflated Balloons To The End Of A Dowel She Then Hangs Up The Dowel Up By The String In The Middle And Adjust It So That The Dowel Hangs Le class=