Example$3/1$ Member ABC loaded by a force $F$

$=1\mathrm{.}3kN$ that causes twisting and bending of a

$20-$mm$-$diameter shaft fixed to a support at the

origin of the reference system. In actuality, the

support may be an inertia that we wish to

rotate, but for the purposes of a stress

analysis we can consider this a statics

problem.

$($a$)$ Compute the maximum normal stress and

shearing stress in the arm $AB$

$($b$)$ Draw state of plane stress of point $A$

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