Which force is used for stretching a rubber band?

What force causes the rubber band to return to its original state after stretching? Here, your use of the word “force” needs clarification. This is asking about elasticity which isn't a force, but instead is a measurable characteristic of solids. read more

• Shoot more rubber bands in the same way, except stretch them back to 15 cm, 20 cm, 25 cm or 30 cm. Shoot at least five rubber bands for each stretch length. After each launch, have your helper circle where they land. After launching five rubber bands at a given stretch length, measure the distances from your line to the circles. read more

Exactly how much it stretches depends on the applied force and the characteristics of the rubber band. In general, the more force that is applied, the more it stretches. For rubber bands that are not stretched too much, if you double the force applied, it turns out that the stretch doubles as well. read more