A small body of mass 0.50 kg is attached by a 0.50-mlong cord to a pin set

Question:

A small body of mass 0.50 kg is attached by a 0.50-mlong cord to a pin set into the surface of a frictionless table top. The body moves in a circle on the horizontal surface with a speed of 2.0πm/s.
(a) What is the magnitude of the radial acceleration of the body?
(b) What is the tension in the cord?