A team of mathematicians has uncovered the physics and mathematics behind hula hooping, revealing that body shape is crucial in mastering this popular activity. Researchers at New York University’s Courant Institute of Mathematical Sciences conducted experiments using robotic hula hoopers with different shapes to replicate human forms.
The results showed that the exact form of the gyration motion or the cross-section shape of the body wasn’t a factor in hula hooping, but keeping the hoop elevated against gravity for a significant period was more challenging. A “special” body type with a sloping surface as “hips” and a curvy form as a “waist” proved essential.
This discovery could explain why some people are natural hoopers while others struggle. The researchers developed mathematical models to derive formulas that explained their findings, which can also be applied to other purposes such as engineering innovations and improving robotic positioners.
The study’s lead author, Leif Ristroph, emphasizes the importance of understanding this activity at a basic physics level, as it could inspire new discoveries in energy harvesting and robotics.
Source: https://phys.org/news/2025-01-hula-hoop-master-gravity-mathematicians.html