Which concept is a 3D point where the total weight may be considered concentrated?

Which concept is a 3D point where the total weight may be considered concentrated?

• A. Center of Gravity
• B. Centroid
• C. Volume
• D. Density

Answer: (A)

The point where the total weight can be considered to act is the center of gravity. In a gravitational field, all the distributed weight of an object can be replaced by a single resultant force acting at that point, making it the effective location for weight-based analysis. If the density is uniform and gravity is uniform, this point coincides with the geometric center (the centroid), but in general it depends on how mass is distributed with respect to gravity. Volume and density describe properties of the object, not a specific point where weight acts.

The point where the total weight can be considered to act is the center of gravity. In a gravitational field, all the distributed weight of an object can be replaced by a single resultant force acting at that point, making it the effective location for weight-based analysis. If the density is uniform and gravity is uniform, this point coincides with the geometric center (the centroid), but in general it depends on how mass is distributed with respect to gravity. Volume and density describe properties of the object, not a specific point where weight acts.