Rubber Band Force Equation

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.

Rubber band force equation. When a rubber band is stretched some of the network chains are forced to become straight. Elastic potential energy is equal to the force times the distance of movement. The following figure shows the experimentally obtained measured force vs displacement for a rubber band. 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.

After you get the rubber band stretched just a little bit it is very spring like. Elastic potential energy is the stored energy of a compressible or stretchable object like a spring or rubber band or molecule. F force in newtons. In this case the linear function fitting the straight part of the data gives a spring constant of 17 38 n m.

Rubber band force vs. If you released a rubber band with properties like that it would just stay in the outstretched position until you force into another state. 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. 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.

W elastic potential energy in joules.