1. The problem statement, all variables and given/known data In the notes , the author stated that when the force is applied through the centorid of cross section , the channel will bend and twist. but , on the second page , the author stated that the shear center lies on an axis of symmetry of member's cross sectional area... So, i am confused whether the member will twist or not when the force P is applied thru the centroid or shear center .... Why the shear center is located at O , which is located outside of the C channel ? 2. Relevant equations 3. The attempt at a solution Is there anything wrong with the notes ?