Which one of the following expressions represents the magnitude of centripetal…

PHYSICS · Single correct · CBSE · Physics · Motion in a Plane · Motion in a Plane

Problem

Which one of the following expressions represents the magnitude of centripetal acceleration

a_c

of a body moving with angular speed

\omega

in a circle of radius

r

? (a)

a_c = \omega r^{2}

(b)

\displaystyle a_c = \dfrac{\omega^{2}}{r}

(c)

a_c = \omega^{2} r

(d)

a_c = \omega r