Tracker Modeling in Plastic Rod rolling down a metal slope
http://weelookang.blogspot.sg/2012/07/tracker-modeling-in-plastic-rod-rolling.html
Author Video: lookang
Author Tracker model: lookang
[img]http://1.bp.blogspot.com/-3Ze9PH_PP4w/T_-J_WJSCNI/AAAAAAAADHM/g5-iFkNKn5I/s640/rod_rolling_down_a_metal_slope_2012-07-13_1039.png[/img]
Tracker Modeling in plastic rod rolling down a slope  Model is x = -0.157*t^2-0.04*t and   y = -0.0085*t^2-0.0035*t+0.043 with pe potential energy defined as pe = m*g*h and te = pe +K