Sphericity is defined as the measure of how close an irregularly shaped object is to which shape?

Sphericity is defined as the measure of how close an irregularly shaped object is to which shape?

• A. A Sphere
• B. A Cube
• C. A Cylinder
• D. A Cone

Answer: (A)

Sphericity measures how close an irregular object is to a perfect sphere. A sphere has the smallest possible surface area for a given volume, so an object that is very sphere-like will have a sphericity near 1. The idea is to compare the object's surface area to that of a sphere with the same volume; if they match, you’re at 1, and as the shape becomes more elongated or irregular, the required surface area increases and sphericity drops. Therefore, the closest reference shape is a sphere, which gives the maximum sphericity.

Sphericity measures how close an irregular object is to a perfect sphere. A sphere has the smallest possible surface area for a given volume, so an object that is very sphere-like will have a sphericity near 1. The idea is to compare the object's surface area to that of a sphere with the same volume; if they match, you’re at 1, and as the shape becomes more elongated or irregular, the required surface area increases and sphericity drops. Therefore, the closest reference shape is a sphere, which gives the maximum sphericity.