When using a lifting beam the hook must be located where relative to the center of gravity?

• A. Over the center of gravity
• B. Left of the center of gravity
• C. Under the center of gravity
• D. In front of the center of gravity

Answer: (A)

The key idea is that the lifting force should act through the load’s center of gravity to avoid creating any turning moment. Placing the hook directly over the center of gravity ensures the vertical lift line passes through the CG, so no net moment is produced and the load stays stable during lifting. If the hook were offset to one side, in front of, or behind the CG, a moment would be generated that could cause the load to tilt or swing. If the hook were under the CG, that unstable moment would also arise. So the best placement is directly over the center of gravity.