Engineers assess mass distribution with precision scales, computer models and repeated testing. NASA describes the target as dynamic balance: an object that can travel smoothly without unexpected movement. [S1]
The example also shows why a single balance point matters: when one part of a soccer ball is heavier, its center of mass shifts, and the ball may not move smoothly. The article presents this as an engineering mechanism, not a comparison of competing ball designs. [S1]
Source documents
- NASA Knows: What Is Mass Distribution?https://www.nasa.gov/learning-resources/nasa-knows-what-is-mass-distribution/