Show that Hooke's law is valid in the loading of a helical spring and that the extension of the springs is a function of the acting force and of the hardness of the springs.
- 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