Researchers at New York University’s Courant Institute of Mathematical Sciences have made groundbreaking discoveries about hula hooping, uncovering the physics and mathematics behind this popular activity. The team, led by associate professor Leif Ristroph, explored how different body shapes and motions affect a hoop’s ability to stay aloft against gravity.
In an experiment involving robotic hula hoopers with 3D-printed bodies of varying shapes, including cylinders, cones, and hourglass forms, the researchers found that the shape or motion of the body did not significantly impact the hoop’s stability. However, maintaining the hoop in place for an extended period required a specific “body type” – one with a sloping surface and curvy form.
This unique combination allows individuals to effectively push up the hoop and hold it in place, making them natural hoopers. The research also sheds light on why some people struggle to hula hoop, as their body shape may not provide the necessary angle for propelling the hoop upwards.
The study’s findings have implications beyond hula hooping, with potential applications in energy harvesting, robotic positioners, and industrial manufacturing. The researchers’ work was supported by a grant from the National Science Foundation.
Source: https://www.futurity.org/physics-secrets-hula-hoops-hooping-3262322