A distributed load in a structural system is a force that is applied over a length or area rather than at a single point. It can be represented by a continuous line or curve on a diagram.
To calculate the reaction forces at points A and B, you will need to first find the total load applied over the length or area of the distributed load. Then, use the principles of statics to determine the distribution of the load and the corresponding reaction forces at each point.
Distributed loads are commonly found in beam and truss structures. They can also be present in other types of structural systems, such as frames and arches.
The position of a distributed load can greatly affect the reaction forces at points A and B. If the load is closer to one of the points, that point will experience a greater reaction force compared to the other point. The distribution of the load along the structure will also impact the magnitude and direction of the reaction forces.
Some common methods for solving distributed load problems include using the equations of statics, drawing free body diagrams, and applying the concepts of equilibrium. It is also helpful to break the distributed load into smaller, simpler components to make the calculations more manageable.