Evaluate elongation of bar of varying cross section:
How you evaluate elongation of bar of varying cross section:?
Sol.: Take bar made up of different lengths and which is having different cross sections as shown in the figure given below.
For this type of bar, the following conditions apply:
(i) Each section is subjected to same external pull or push
(ii) Total change in length is equal to sum of changes of individual lengths
P1 = P2 = P3 = P as H = 0 & V = 0 and
If bar segments are made of same material, then in that particular case