For all problems, when reporting answers for reactions that do not involve $2-$force members, report the magnitude of each reaction with an arrow that indicates the direction in which that reaction must react to maintain equilibrium of the object $($don$\text{'}$t include any $\frac{+}{-}$ signs$).$ When reporting answers that do involve $2-$force members, report the magnitude of the force felt in the $2-$force member $($which is the same as the force that $2-$force member applies to object it's connected to$),$ and tell whether the $2-$force member experiences tension or compression $($which is also what it applies to the object it's connected to$).$

Determine all of the reactions at the fixed support $0.$

The beam $AB$ has a triangularly distributed force applied as shown, and is supported by a pin at A and bar BC$,$ which is pinned to beam $AB$ at point $B$ and is pinned at $C$ to the pin support there.

Determine the reactions at A and at B$.$

$3.$ The bent bar $AB$ is supported by a pin at A and a roller in a smooth slot at B $.$ Determine the reactions at A and B $.$

$4.$ Beam $AB$ is supported by a pin at A and bar $BC,$ which is pinned at both ends. Determine the reactions at A and B $.$

$5.$ Bar $AB$ is supported by a pinned support at A and link $BD.$ Determine the reactions at A and the force applied by link BD required to keep bar $AB$ in equilibrium.

$($Hint: You should draw a FBD of bar AB$.)$