For the beam shown below:

a$)$ Determine the reaction force, $1$R $,$at the support B$.$

b$)$ Determine the reaction force, $2$R $,$ at the support C$.$

c$)$ Determine the maximum tensile bending stress.

d$)$Determine the maximum compressive bending stress.

e$)$ Determine the maximum shear stress due to V $.$

f$)$ Determine the maximum shear stress in the beam.