In case of Bulk's modulus(K),volumetric strain,i.e.,(deltaV/V)is taken as negetive as the volume of the body decreases.So,in case of Young's modulus(Y),when the length of the string decreases, why is the longitudinal strain,i.e.,(l/L) not taken as negetive?

Asked by SOURAV BHATTACHARYYA | 25th Oct, 2013, 09:39: PM

Expert Answer:

Longitudinal strain (l/L) is taken positive for elongation and negative for compression of length.
However, in case of a string, the deforming force generally elongates the string; hence longitudinal strain comes out to be positive.

Answered by  | 30th Oct, 2013, 03:46: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.