Acrobots -

Whether it's a digital model in a physics simulator or a physical machine in a robotics lab, the Acrobot continues to be a vital tool for teaching machines how to move with the grace and intelligence of a human performer. Dynamics Showing Perfection in Acrobats- Robots by Boston

Unlike a standard robotic arm where every joint has its own motor, the Acrobot has only one powered joint. It consists of two links and two joints: Acrobots

This joint is unpowered (passive). It hangs freely from a fixed pivot point, much like a gymnast's hands on a bar. Whether it's a digital model in a physics

Modern robots like Boston Dynamics' Atlas use similar principles of momentum and balance to perform flips and navigate rough terrain. Acrobots