Botham's Bathtub

Botham's Bathtub is a well-known physics demonstration that illustrates how an object experiences a force (centrifugal force) pushing it outward when spun in a rotating system. When a person sits in a circular bathtub or on a rotating platform, they feel pushed against the wall, which is a result of inertia—the tendency of their body to resist changes in motion. This setup helps visualize the effects of rotation and centrifugal force, emphasizing how objects in a rotating frame seem to be pushed outward, despite gravity pulling everything down. It's a practical way to understand rotational dynamics and fictitious forces in a rotating reference frame.