1. The students should learn with the help of the spring balance
that a force on a body can only be exerted when a counterforce acts
on it simultaneously.
2. Using two spring balances, the students should experimentally
determine that the forces on both spring balances are equally
great, i.e. that force = counterforce (action = reaction).
- Real stand material for an esecially stable and safe setup
- Student-suitable experiment descriptions with reports available