The dynamics of circular motion explain the forces that cause an object to move in a curved path. The key forces involved are centripetal force (a real, inward force) and centrifugal force (a pseudo, outward force observed from a rotating frame of reference). Centripetal force: Centripetal force is defined as the force acting on an object moving in a curved or circular path, which is directed towards the center of curvature or the axis of rotation. Centrifugal force: centrifugal force is defined as a pseudo or fictitious force that appears to act on a body moving in a circular path, directed radially away from the center of the circle, when observed from a non-inertial (rotating) frame of reference.