Stretching Materials

... Stretching Materials Planning My Work For this experiment I will need to investigate the factors that effect the 'stretch' or extension of a piece of material. Aim: To find a relationship between the length a piece of material can stretch under a certain weight, and how a certain length effects how much it stretches. The extension of the materials I use will rely on whether the molecules are strong enough to hold a definite shape. In a solid there are two forces acting. There are attractive forces if molecules try to move apart and repulsive forces if molecules try to move closer. If the material is stretched then the forces are unbalanced. This is what is taking place in our experiment. We will want to investigate the stretch of our materials and so it is important to bare in mind this information to identify the key factors that might affect the extension of the material. From this

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