Center of gravity is critical for rigging planning because

• A. The Center of Gravity is the maximum rated load of the sling.
• B. CG is the point where the load’s weight acts; locating it determines attachment points and sling angles to maintain balance and prevent tipping.
• C. CG is the weight of the rope only.
• D. CG is the distance between load and hoist.

Answer: (B)

Center of gravity is the point where the load’s weight effectively acts. In rigging, knowing where that point sits lets you choose attachment points and sling angles that keep the lift balanced. When the lifting forces align with the CG, the load stays stable and is less prone to tipping or swaying. If the attachments pull the load so the line of action shifts away from the CG, one side bears more of the weight, creating moments that can tip or rotate the load and stress the rigging unevenly. By locating the CG and arranging the slings so the lift line passes near it, you minimize those moments and keep tensions more even, which improves stability and safety. Sling angles matter because larger angles push more load into each leg and can destabilize the rise, so keeping angles within safe limits helps maintain a controlled, balanced lift.