Question

explain the behaviour of metal wire under increasing load​

Answer 1

Your answer:-

The behaviour of wire under increasing load can be explained with the help of stress v/s strain graph. ... If the wire is unloaded at point E, the graph between stress and strain follows the reverse path EPO, then the point E is called elastic limit. The portion between O and E is called elastic region.

Answer 2

The behaviour of wire under increasing load can be explained with the help of stress v/s strain graph.

By increasing the stress on the body continuously the corresponding strain is noted down.

When we do not apply any force on the body there is no stress and hence there is no strain. With the increase of the stress the strain also increases proportionately up to certain extent and the point up to where it happens is called as elastic limit.

Many times this limit is also called as proportionality limit,it meant to say that for many bodies proportionality limit and the elastic limit coincides with each other.