A particle of mass m is describing a circular path of radius r with uniform speed. If L is the angular momentum of the particle about the axis of the circle, the kinetic energy of the particle is given by

• A

  ${\mathrm{L}}^2/{\mathrm{mr}}^2$

• B

  ${\mathrm{L}}^2/2{\mathrm{mr}}^2$

• C

  $2{\mathrm{L}}^2/{\mathrm{mr}}^2$

• D

  ${\mathrm{mr}}^2\mathrm{L}$