One way to stretch tight elastic on a shoe is to gently heat the elastic with a hairdryer for a few minutes to make it more pliable, then wear the shoes with thick socks to help stretch the elastic as it cools down. You can also try wearing the shoes around the house for short periods of time to gradually stretch the elastic.
Elastic potential energy is stored when you stretch a spring. This energy is a type of potential energy that is stored in an object when it is compressed or stretched.
If a pulling force is exerted on an elastic band, it will stretch and store potential energy as the elastic band is deformed. The band will exert a restoring force back in the opposite direction to its original shape, trying to regain its unstretched position once the external force is removed.
The elastic band would stretch due to the weight of the heavy object pulling on it. The elastic band would continue to elongate until it reaches its maximum stretch or breaks.
The energy stored in a stretched elastic is potential energy, specifically elastic potential energy. When the elastic is stretched, work is done to stretch it, and this work is stored as potential energy in the elastic material.
When you stretch an elastic band, your muscles exert a pulling force on the band. The force is generated by the contraction of your muscles, which results in the stretching of the band.
You sew the elastic about an inch or two apart in the heel of the shoe. It should be cut and measured around your ankle ahead of time so you know it won't be too tight or too loose.H______________________________________________________________________One Elastic Band:1) Fold the back of your pointe shoe down.2) Mark the place where the back of the pointe shoe falls.3) Take your elastic and place it at an angle, right where you marked.4) Stretch the elastic to the other side, where your other marking is.5) Sew the elastic in place with enough "extra" on each side (this will keep the back of the shoe on your heel).Two Elastic Bands (Crisscrossed):1) Place the pointe shoe on your foot.2) About 1-1.5 inches from the heel, sew one end of the band.3) Stretch the elastic across the top of the foot to a place on the shoe a little closer to the toes (about 2-2.5 inches from the heel).4) Sew the end of the elastic there.5) Repeat on the other side, starting at the end on the back and moving it forward.6) It should look like an "X" on the top of your foot.
To stretch new leather boots, you can spray rubbing alcohol on the part that is tight, and then wear them for up to four hours. If boots are tight at the calf, then you may need to take them to a cobbler so he can insert a piece of leather or elastic to make them larger.
To weaken elastic so it is not so tight is by heating it with an iron. Stretch the elastic as you apply heat and leave it stretched until it cools. You may have to apply heat more than once.
I think my dad put wet news paper rolled up tight in the shoe.
Grace had to sew elastic on to ballet shoe for dance. Also the elastic made the waist on my pants to tight.
It doesn't
It is similar to elastic
Elastic fibers made of the protein elastin has a coiled structure which allows it to stretch and recoil. Fibers can stretch up to 150 percent of their relaxed state length without breaking.
tighten
tension
Weight causes the elastic material to stretch. The material may be stretched beyond its elastic limit. If this happens, then the material rips or tears, or it does not return to its original size.
Sewing with Nancy - 1983 Sew Elastic-Stretch Your Options was released on: USA: 16 January 2011