Which one of the following expressions correctly gives the angular displacement (in…

PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

Which one of the following expressions correctly gives the angular displacement

\theta

(in radians) in terms of arc length

s

and radius

r

of a circle? (a)

\theta = \dfrac{2\pi s}{r}

(b)

\theta = \dfrac{s}{r}

(c)

\theta = \dfrac{r}{s}

(d)

\theta = \dfrac{s}{2\pi r}