How i find friction between surfaces without using COF tester?

ParamTv

In the morning i get this idea ....the simplest way to determine friction force between two sliding surfaces.
http://www.youtube.com/watch?v=T2jWT9r2Z-U&feature=plcp

ParamTv	How i find friction between surfaces without using COF tester? Tweet In the morning i get this idea ....the simplest way to determine friction force between two sliding surfaces. http://www.youtube.com/watch?v=T2jWT9r2Z-U&feature=plcp