Answer:
Option B and E
A moment force
Reaction in the Y axis
Step-by-step explanation:
A built-in-end cantilever support is one which has one end fixed into a wall. This makes it rigid and immovable in the x direction.
Cantilevers are usually loaded in the y-direction, and this usually sets up the following:
1. Rotation reactions: This is because the load is applied a distance away from the support, in a direction that is perpendicular to the length of the beam. This sets up a rotational force on the beam. and consequently, a rotational reaction at the support ( A moment force)
2. Reaction forces in the Y axis: The mere fact that it is usually loaded in the y - axis, by Newton's third law, there will always be reaction forces set up in the y- direction at the support.
Note: No reactions in the x axis are set up here, because loading on built-in-end cantilever support is usually vertical.
Hence, option B and E are correct.