Rotational mechanics is one of the important topics of mechanics that requires great imagination and intuitive power. It helps us understand the mechanics behind the rotatory motion that we study in electric motors and generators. In rotational motion, tangential acceleration is a measure of how fast a tangential velocity changes. It always acts orthogonally to the centripetal acceleration of a rotating object. It is equal to the product of angular acceleration α to the radius of the rotation. The tangential acceleration = radius of the rotation *  its angular acceleration.  It is always measured in radian per second square. Its dimensional formula is [T-2].