S.O.S. Mathematics CyberBoard

how can i prove that the coefficient of kinetic friction between an inclined plane and an object sliding down it at a constant speed is independent of the mass of the object through experimental proof and mathematical proof. Mathematical proof is pretty easy but experimental is what im lost at. If someone can pls help me that would much appreciated!

By experiement and supporting data!

BTW, I never know of any mathematical proof. It will surprise any physicist if Law of Friction could be proved by Mathematics.

the thing is, is that our experimental data is completely off from wat we were supposed to get from the force sensor so i dont trust it at all.....wait i know! Thank u though, but i can show how the coefficient of kinetic friction is the tan of the angle cause we did that in school and there the mass variable cancels out.