Please be as detailed as possible. NEED THIS ASAP for mechanical Design course

(30%) 3. A cantilever beam is used as part of a machine element carrying a load of10,000 lbs at its end as shown in the figure below. In practice, however, thedeflection at the end point was observed to be excessive. A designer suggestedusing a support at point B. The effect of the support is that the deflection atpoint B will be zero. In order to design the support structure, we need todetermine the force provided by the support. Please use Castigliano's theoremto find this force and neglect transverse shear.10,000 Lbs.0.5'CAkB0.2'