Sign convention of shear stress

[chetzread]

Homework Statement

In the in the first image , it's shown that the shear stresses has positive sign, whereas in the second image e (circled blue part) has different sign convention,which is positive and negative, which is correct?

Homework Equations

The Attempt at a Solution

IMO, the second image is wrong

 

[KataKoniK]

because it is using a different sign convention than the first image. In order to maintain consistency and avoid confusion, it is important to use the same sign convention throughout the analysis. In this case, the first image shows that positive shear stresses are in the counter-clockwise direction, while the second image shows that positive shear stresses are in the clockwise direction. This inconsistency can lead to errors in calculations and should be corrected. It is important for scientists to use standard sign conventions in order to communicate their findings accurately and effectively.