Take a sharp turn in a car and your body slides toward the outside door. On a fast merry-go-round you feel pressed against the railing. People call this the centrifugal force, as if something is pushing you away from the center. In an inertial frame of reference, that outward push is not a real force at all. It is a sensation caused by inertia: your body wants to keep moving in a straight line while the car or ride curves away underneath you. The seat, door, or safety belt must pull you inward to make you turn. Physicists call centrifugal force a fictitious or pseudo force because it only appears when you describe motion from a rotating point of view.
🔄 FICTITIOUS FORCE
Centrifugal force is not a real interaction between objects in an inertial frame. It is the feeling you get when a rotating frame accelerates you away from the straight path your inertia prefers.