# Mohr's circle

1. Dec 18, 2016

### fonseh

1. The problem statement, all variables and given/known data
http://web.mit.edu/course/16/16.unified/www/FALL/materials/documents/HO-M-6(Mohrs)(08).pdf

I found this on the Internet . At there , the author defined positive as counterclockwise rotation .
and also “
Positive shear would cause a clockwise rotation of the infinitesimal element about the element center.

In the notes , the author defined positive shear axis as upwards , if I draw positive shear axis as downwards , will it make the difference ? Is it necessary to define clockwise rotation as positive now ?

2. Relevant equations

3. The attempt at a solution
IMO , it 's necessary to define clockwise rotation as positive . Correct me if I'm wrong .

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Last edited by a moderator: Dec 18, 2016
2. Feb 16, 2017