x = if(t<0.51,0,if(t<0.901,-7.814E0*t^3+1.927E1*t^2-1.585E1*t+4.134E0,if(t<1.76,-0.23,if(t<1.9,3.719E0*t^2-1.469E1*t+1.405E1,-0.46))))
y = if(t<0.48,0,if(t<0.567,6.486E-1*t-3.104E-1,if(t<0.701,-1.310E0*t+8.101E-1,if(t<0.767,-0.1,if(t<0.901,-8.493E-1*t+5.695E-1,if(t<1.702,-0.19,if(t<1.768,1.308E0*t-2.425E0,if(t<1.869,-1.714E0*t+2.936E0,if(t<2.102,-5.104E-1*t+6.803E-1,-0.3750)))))))))
author of video: rebeccaoei
author of model: lookang
Author: video: rebeccaoei, model: lookang
Contact: weelookang@gmail.com
More information at: http://weelookang.blogspot.com/2014/09/slinky-moving-down-steps-model.html