Where should the attachment points be located to achieve load stability?

• A. Above the center of gravity
• B. Below the center of gravity
• C. At the center of gravity
• D. To the side of the center of gravity

Answer: (C)

The key idea is that load stability in lifting comes from aligning the lifting force with the load’s center of gravity. When the attachment points are at the center of gravity, the lift pulls through the exact point where the weight acts, so there’s no unbalanced torque to rotate the load. That means the load stays oriented and balanced as it’s hoisted, reducing tipping and swinging.

If the attachment points aren’t at the center of gravity—whether they're above, below, or to the side—the lift creates a turning moment about the CG. That moment makes the load tilt or swing during lifting, which is dangerous and unstable. In practice, riggers seek an arrangement where the resultant lift line passes through the CG, often using multiple slings with careful positioning to keep the load stable.