Principle
Demonstrate that sliding friction is:
- smaller than static friction
-
proportional to the normal force
-
a function of the nature of the contact surfaces
and
-
independent of the size of the contact surface.
Benefits
- Optimised for demonstration experiments: Transformation from horizontal into vertical direction
- Very good visibility: Big devices on uniform background
- Strong Magnets (at least 10 N) allow a safe mounting and therefore a very easy handling
- Demonstrative measurement of forces with large circular dynamometers with a fixing magnet and ball-bearing pulley with two cord grooves for two measuring ranges