$[$Exercise $2-2]$

As shown in Figure $2-2,$ a moment $M$ is applied to the left

end $A$ of a straight beam supported at the left end A and fixed at

the right end $B.$ The reaction force that the beam receives

from the support point $C$ at the left end $A$ is $RA,$ the bending

rigidity is EI $,$ and the span is $1.$

Answer the following questions.

$(1)$

Using MO

$,$ RA$,$ EI$,1,$

and $x$ as necessary, express the bending moment

$M$ and shear force $F$ that occur in the beam.

$(2)$ Using Mo$,$ El$,$ or $1$ as necessary, express the

reaction force $RA$ acting on the beam.

Using that theorem, the decision is made by using Castiliagno