Final answer:
When the combined center of gravity moves outside the stability triangle, the object or system becomes unstable and may topple over.
Step-by-step explanation:
When the combined center of gravity moves outside the stability triangle, the object or system becomes unstable and may topple over.
The stability triangle is formed by connecting the wheels or base of support of an object or system. If the center of gravity moves outside this triangle, the object's weight distribution becomes unbalanced, resulting in an unstable condition.
For example, if the center of gravity of a truck moves outside the stability triangle (formed by its wheels), the truck may tip over.
When the center of gravity moves outside the base of support, it creates a torque that causes the object to rotate in the opposite direction.
This torque can lead to the object toppling over if not corrected. A simple example is a box tilted on its edge.
As long as the center of gravity remains over the base, the box will return to its stable position. However, if the center of gravity moves outside the base, the box will roll over.