The centrifugal force which tends to throw the electrons out it's orbit as stated with mass moving velocity in an orbit of radius is given as what? ​

In Motion in Two and Three Dimensions, we examined the basic concepts of circular motion. An object undergoing circular motion, like one of the race cars shown at the beginning of this chapter, must be accelerating because it is changing the direction of its velocity. We proved that this centrally directed acceleration, called centripetal acceleration, is given by the formula

\[{a}_{\text{c}}=\frac{{v}^{2}}{r}\]

i would think form in reponse to tensional forces