Question 2 1 point Which of the following is incorrect regar

Question 2 (1 point) Which of the following is incorrect regarding the sign convention used wi th Mohr\'s circle? Shear stress is positive when rotating the material element counter-clockwise O Compression is negative Shear stress is negative when rotating the material element counter-clockwise O Tension is positive Save Question 3 (1 point) 6) in Mohr\'s circle is measured: Clockwise from point B Counter-clockwise from point A Counter-clockwise from the x-axis Counter-clockwise from the origin

Solution

Question 2. Answer: Shear stress is positive when rotating the element counterclockwise.

Question 3. Answer: Counterclockwise from point A

Explanation

In Mohr\'s circle A is taken as reference point and angle is measured from there. According to sign convention for Mohr\'s circle Tensile stress is positive compressive stress negative and Shear stress rotating the block clockwise is taken as positive.