Explore the dynamics of tetherball, angular momentum, and central forces in this comprehensive lecture. Dive into the physics behind Indiana Jones's whip and a snake wrapping around a tree. Learn about solving nonlinear ODEs, conservation of angular momentum, and central force problems. Analyze a spring-mass system in the plane as a central force example. Understand how radial motion uncouples from angular motion in these systems. Gain insights into 3D applications of the transport theorem and various real-world scenarios involving rotational dynamics.