Veda · OUT OF PURE CURIOSITY
How does a spring measure force?
No load · Force 1 N · Force 2 N
No load
Observe the unloaded spring. The mark shows its initial length.
Force 1 N
The load stretches the spring. At 1 newton, its extension equals one marked unit in this model.
Force 2 N
Double the force: extension doubles too. This applies while the spring stays within its elastic linear range.
For adults · discuss together
Equilibrium extension of an ideal spring. Oscillations and breaking strength are not calculated.
Before experience
Ask: “What do you think will happen?” Let the child check his guess first.
After the experience
What has changed? What remains the same? Where can you notice a similar phenomenon?
