A 2D (two-dimensional) barcode is a graphical image that stores information both horizontally -- as one-dimensional <term>bar code</term>s do -- and vertically. As a result of that construction, 2D...
Centripetal force is the inward-seeking pull of an object. Centrifugal force is the opposite; it appears to pull objects away from the center or axis of rotation.
Centripetal force is the force on an object on a circular path that keeps the object moving on the path. It is always directed to the center and its magnitude is constant, based on the mass of the object, its tangential velocity and the distance of the object (radius) from the center of the circular path.