Coefficient of Friction Experiment The purpose of this experiment is to determine the values of the coffecient of kinetic friction and the coefficent...

Coefficient of Friction Experiment

The purpose of this experiment is to determine the values of the coffecient of kinetic friction and the coefficent of static friction for a pair of surfaces by observing a wooden board moving up an inclined plane at a constant speed.

Question 1:

Does Us depend on mass or not?

Question 2: Why was it necessary to tap the block to get it started in determining uk experiment?