What is the difference between static and dynamic loading?

The distinction between static and dynamic loading is rooted in the nature of the loads applied to structures or rigging systems. Static loading refers to a load that remains constant over time and does not change; it involves no motion, meaning the forces are held in place without acceleration. Examples of static loads include the weight of a building resting on its foundation or equipment that is stationary while it is being supported.

In contrast, dynamic loading encompasses loads that change over time, usually due to motion or variations in forces exerted on the system. This includes loads caused by moving equipment, falling objects, or even wind on a structure. Dynamic loads can also introduce additional forces like inertia, which occur when an object in motion suddenly decelerates, creating further stress on the rigging system.

Understanding this difference is essential for riggers because it influences how they plan and execute lifts, ensuring that safety and stability are maintained under varying conditions. The other options do not adequately capture these fundamental principles, making it clear why the correct distinction between static and dynamic loading centers on their movement and the implications of that movement on the forces involved.