F force in newtons.
Rubber band force equation.
After you get the rubber band stretched just a little bit it is very spring like.
Elastic potential energy is equal to the force times the distance of movement.
Displacement 14 12 10 8 f newtons 2 0 0 00 0 02 0 04 0 06 0 08 0 10 0 12 0 14 x meters curve fitting provides the following force vs displacement equation f x 33 55 x 0 4871 where x is in mand f is in n.
For example if the pegs are placed such that the band is stretched to 52 inches the force the bands apply to the pegs are 57 6 lbs per inch.
Individual 4 carbon backbone units are forced into rotational conformations that have longer end to end distances and this restricts the number of conformations states that are thermally accessible.
Say i have a rubber band wrapped around 2 pegs at a certain distance and at that distance i know the pounds of force per inch it is pulling at.
Without this property the rubber band would have no reason to tend towards a tangled state since the entropy would be about the same in both states.
Rubber band force vs.
Elastic potential energy force x distance of displacement.
W elastic potential energy in joules.
The following figure shows the experimentally obtained measured force vs displacement for a rubber band.
If you released a rubber band with properties like that it would just stay in the outstretched position until you force into another state.
When a rubber band is stretched some of the network chains are forced to become straight.