Describe the term "dynamic load."

The term "dynamic load" refers to a load that can change rapidly or has momentum during lifting, which impacts the forces exerted on the rigging system. This type of load is critical to understand in rigging because it encompasses various scenarios where loads are not static, such as in lifting operations that involve movement or sudden changes in velocity.

Dynamic loads can occur during actions like swinging or accelerating loads, where the forces acting on the rigging must account for not only the weight of the load but also additional forces that arise from these movements. This might include factors such as inertia, momentum, and the effects of wind or other environmental conditions.

Understanding dynamic loads is essential for ensuring the safety and integrity of lifting operations, as these loads require careful consideration in rigging calculations to prevent equipment failure or accidents. In contrast, a constant load remains unchanged during lifting, evenly distributed loads are uniformly spread across a surface, and loads lifted without any movement remain static, presenting different considerations for rigging practices.