Reactions Summary

The video tutorial covers various types of reaction forces, starting with the normal force, which is always perpendicular to the surface. It then explains pinned supports, which have reaction forces in both X and Y directions due to the pin's constraints. Roller supports are discussed next, highlighting that they allow movement in one direction, resulting in a single reaction force. Finally, cantilevered supports are described, showing how they prevent movement and rotation, leading to reaction forces and a reaction moment.

Explain the concept of cantilevered support and its reaction forces.

What happens to the reaction forces when a beam cannot move or rotate?