College of Letters & Science
Department of Physics
Surface Dependence of Friction
1K20.10 SURFACE DEPENDENCE OF FRICTION
A wood block with strips of aluminum, nylon and rubber on 3 of the sides, slips down a variable incline at different angles.
Increase the angle of the incline slowly and have students note the angle at which each surface releases.
The block can also be pulled across a level, rough surface with a spring scale.