doubletop Well-Known Member Project of the Month Winner Joined Mar 1, 2010 Messages 865 Reaction score 82 Sep 11, 2014 #1 I don't need to say much else [ame]https://www.youtube.com/watch?v=YhMiuzyU1ag[/ame] Pete
kf2qd Well-Known Member Joined Apr 1, 2008 Messages 586 Reaction score 76 Sep 11, 2014 #2 Okay. How long is the longest pendulum and what is the change in length between them?
