Physics

Problem

Identify the correct expression for the magnitude of centripetal acceleration

a_c

of a body moving with linear speed

v

in a circle of radius

r

. a)

a_c = \dfrac{2v^{2}}{r}

a_c = \dfrac{v^{2}}{r}

a_c = \dfrac{v^{2}}{2r}

a_c = \dfrac{4v^{2}}{r}