What is the center of gravity?

• A. The geometric center of the object
• B. A fixed point where gravity is evenly distributed
• C. A point at the top of the object
• D. A fixed place in all objects where the entire weight acts like it's concentrated in that one point

Answer: (D)

Center of gravity is the point where the object's weight can be considered to act as a single downward force. In a uniform gravity field like Earth’s, this point coincides with the center of mass and is determined by how mass is distributed inside the object. It represents the balance point: if you support the object at this location, gravity won’t create a net torque about the support, so the object stays steady. It isn’t necessarily the geometric center or the topmost point, and gravity isn’t distributed as a single force at one fixed spot on the surface; rather, all parts experience gravity and their torques combine to a single resultant at the center of gravity. The position depends on mass distribution—heavier regions pull the center toward them—and it’s a key factor in stability: a lower center of gravity generally means more stability, while a higher one makes tipping easier.