Centripetal Force
The net inward force directed toward the center of curvature that keeps an object moving along a curved or circular path.
Governing formula
Fc = m v² / r = m ω² r
SI unit
N
In depth
Centripetal force is not a new fundamental force, but a role played by existing forces (gravity, friction, tension) that continuously deflect velocity vector direction without changing speed.
Examples in the real world
Gravitational attraction keeping Earth in circular orbit, friction between tires and road turning a car around a bend, or tension in a string swinging a bucket.