P2 2.6 Stretching and squashing

If we hang small weights from a spring it will strech. The increase in length from the orginal is called the extension. When we remove the weights the spring will return to its orginal length.
Objects and materials that behave in this way are called elastic.
An elastic object is one that regains its orginal shape when the forces deforming it are removed.
If we plot a graph of extension against force applied for a spring., we obtain a striaght line that passes though the orgin. This tells us that the extension is directly proportional…

Get Revising