On gradual loading , stress - strain relationship for a metal wire is as follows . Within proportionality limit , stress prop strain or, `"Stress"/"strain"` = a constant for the material of wire.
Just on crossing the yield region, the material will have

On gradual loading , stress - strain relationship for a metal wire is as follows . Within proportionality limit , stress prop strain or, "Stress"/"strain" = a constant for the material of wire. If "Stress"/"Strain" is x in elastic region and y in the region of yield , then

On gradual loading , stress - strain relationship for a metal wire is as follows . Within proportionality limit , stress prop strain or, "Stress"/"strain" = a constant for the material of wire. Two wires of same material have length and radius (L,r) and (2L , r/2) . The ratio of their young's modulii is

On gradual loading , stress - strain relationship for a metal wire is as follows . Within proportionality limit , stress prop strain or, "Stress"/"strain" = a constant for the material of wire. Two wires of same material have length and radius (L,r) and (2L , r/2) . The ratio of their young's modulii is

The constant of proportionality of stress and strain is

Plot a stress to strain curve for a metal and explain.

Within elastic limit, if stress is doubled the strain becomes

Write stress-strain curve for a metal. What is proportional limit and yield point ?