30/07/2026
CENTER OF GRAVITY (COG) & SLING LOAD CALCULATION
Understanding Sling Tension Through Center of Gravity Analysis
⚫ Why is Center of Gravity Important?
The Center of Gravity (COG) determines how the load is distributed between lifting slings. Incorrect COG calculations can result in:
Overloading one sling leg
Uneven load distribution
Unstable lifting operation
Load swing or rotation
Potential lifting failure
Engineering Formula
✔ Determine the Center of Gravity (CG)
✔ Determine sling lengths and lifting geometry.
✔ Calculate the actual sling load (SWL) for each lifting point.
Remember:
The sling angle directly affects sling tension.
The smaller the sling angle, the higher the force acting on the sling.
Engineering Principle
Never assume each sling carries equal load.
Always calculate:
✅ Center of Gravity (COG)
✅ Sling Angle
✅ Sling Tension
✅ Load Distribution
✅ Lifting Geometry
These calculations ensure a safe lifting operation and compliance with industry standards.
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