Two particles of equal mass (m) each move in a circle of radius (r) under the action of their mutual gravitational attraction find the speed of each particle.

Explanation

For the circular motion of each particle,
`(mv^(2))/( r )=("Gmm")/((2r)^(2))impliesv_(2)=("Gm")/(4r)impliesv=(1)/(2)sqrt(("Gm")/( r ))`