Mobile catapult

A simple and fun mobile catapult.

https://2.bp.blogspot.com/-jxRnIRihvNw/VtoAHT4XLKI/AAAAAAAADMY/Rt3nZd8nHew/s320/IMG_20160301_225732.jpg https://1.bp.blogspot.com/-z2xWdeIaHX4/VtoAH2JW5nI/AAAAAAAADMc/F9JItM0l330/s200/IMG_20160302_220548.jpg https://1.bp.blogspot.com/-aTQu5mrR21Q/VtoAII6gzZI/AAAAAAAADMg/uvKPujDhObU/s200/IMG_20160302_220618.jpg https://4.bp.blogspot.com/-2zby0_tnzLw/VtoAHV36y2I/AAAAAAAADMU/YUstzb6d8II/s200/IMG_20160301_225656.jpg

[video]https://youtu.be/4B886EBOlic[/video]