Rubber Band Force Equation

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. 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.

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The following figure shows the experimentally obtained measured force vs displacement for a rubber band.

Rubber band force equation.

W elastic potential energy in joules. 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. A rubber band is a single molecule as is a latex glove.

Elastic potential energy is equal to the force times the distance of movement. 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. If you released a rubber band with properties like that it would just stay in the outstretched position until you force into another state. 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.

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. Elastic potential energy is the stored energy of a compressible or stretchable object like a spring or rubber band or molecule. When a rubber band is stretched some of the network chains are forced to become straight. Elastic potential energy force x distance of displacement.

After you get the rubber band stretched just a little bit it is very spring like.

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