Moment calculation!! Can anyone HELP me with this?!!?

Question

HI guys, I have the diagram in the link below, and I was wondering how would I do the following calculations?! In the figure shown, would there be any other stresses other than bending stress due to moment? I know there would be shear, but how would I calculate that? Also in the postion (12-6 o'clock) there wold be no torsion, right?

http://oregonstate.edu/~patelu/stress.JPG

Thanks!!

Answer 1

♠ start with torque around axis 9-3 o’clock; cross product T=[r*F], where arm r=L1+L2, vector L1=|L1|*j, vector L2=|L2|*i, while F=-|F|*j; thus
♣ vector T=[L1*F] + [L2*F] = 0+[L2*F] = -|L2|*|F|; directed from you;