Select Dynamic Model Cartesian, propose inital model say Fy = -mg
add parameter g = 9.81 since assume m =1 by default
determine vy when t=0, which is found via analysis to be vy = -0.6
Fy = -mg-kvy where kvy is drag force
fine tune value of k until match data k is found to be k = 1.11
this completes the fall under drag model
to add the rebounce force
propose computational thinking, if (t< thitground , true, false )
nestted if statements to achieve answer
can you get the same model?, need to assume contact time of 0.02
the model suggests contact force is 500 N for a mass of ping pong m=1kg
if ping pong mass is measured, just key in to find the contact force.
enjoy!
Author: Ning video, Loo Kang model
Contact: weelookang@gmail.com
More information at: http://weelookang.blogspot.sg/2016/08/ping-pong-ball-rebounce-model.html