Centripetal Acceleration — the NEET Physics formula with its derivation, variables, validity constraints and worked solver.
Centripetal Acceleration Valid for Uniform Circular Motion (UCM) or calculating instantaneous radial acceleration in Non-Uniform Circular Motion. Define position vector R(t) in polar coordinates. Differentiate position vector to obtain velocity v(t). Differentiate velocity vector to obtain acceleration a(t). Isolate the radial component of the acceleration vector. r > 0 Motion must be along a curved path Centripetal acceleration causes a change in speed (it only changes direction). Centripetal acceleration is a separate force (it is the net result of forces like tension, gravity, or friction). Confusing centripetal (inward) with centrifugal (fictitious outward).