Understanding how Forces Work in Lifting and Hauling
Why do all waterfalls flow downward? Gravity
Why does a ball return to the ground after we throw it upward? Gravity
Forces are fundamental and ever-present throughout the universe.
Everyday actions—walking, writing, driving, eating, reading, and speaking—all involve the application of force.
In rigging operations, whether you’re installing antennas, climbing towers, or performing rescue setups, the forces within the system are not always visible, but they are always active.
Understanding and accounting for these forces is critical to ensuring structural integrity, load control, and safety.
Understanding Forces in Rigging Systems
Whether you’re installing antennas, conducting maintenance, or setting up a rescue operation, the forces acting within your rigging system may not be immediately visible—but they are always present and must be accounted for.
Rigging systems operate in both vertical and horizontal environments and incorporate components such as ropes, anchors, carabiners, shackles, and pulleys. Each of these elements is subjected to various mechanical forces, including tension, compression, shear, and friction.
If these forces are underestimated, miscalculated, or misunderstood, the system’s integrity may be compromised—leading to equipment failure, serious injury, or loss of life.
• Gravitational Force
• Frictional Force
• Tension Force
• Wind/Air Force
• Vector
• Resultant
Archimedes once said, “Give me a lever long enough and a fulcrum on which to place it, and I shall move the world”.
Rigging or hauling includes an understanding of the total weight of the load. Weight describes the force “of” a mass being influenced by gravity, it creates the “load/weight” sitting on a surface and if measured in pounds and “should be” should be converted into Newtons (N) or 1 pound force/4.44822N = a measurement of force.
Mass is the amount of matter in an object is an intrinsic, unchanging property of the object, and is traditionally measured in kilograms (kg).
Weight is the force of gravity pulling on an object. It depends on both the object’s mass and the strength of the gravitational field it is in. Therefore, weight is measured in Newtons (N).
You can’t see the various forces, but you can calculate and learn to understand them. From hauling to anchoring, the key is understanding all that goes into rigging.
Knowing the weight
Understand the angles
Never underestimate gravity
Remember: Every rope, sling, pulley, carabiner, shackle, and anchor has a limit—your knowledge is a culmination of diligent training, field experience, and the understanding that Forces are NOT Hidden.
Respect the system. Trust the process. And never stop learning—Your Safety Depends on it.
Rig On My Friends,
Anjali and Kathy
