A load will tip over when lifted if:

A load will tip over when lifted if it is lifted below its center of gravity due to the relationship between the center of gravity and stability. The center of gravity is the point where the weight of the object is evenly distributed in all directions; lifting from below this point increases the likelihood that the load will become unbalanced and tip over, especially if a force is applied that creates a moment about that center.

When an object is lifted from a point lower than the center of gravity, the angle of the load can change, allowing gravity to create more torque, thus making it easy for the load to rotate about its tipping point. Conversely, lifting above the center of gravity often maintains better control and balance, reducing the risk of a tip over. The other scenarios, such as lifting with more people or using assistive devices, typically contribute to the effective management and stability of the load rather than increasing the risk of tipping.