A tetherball leans against the smooth, frictionless post to which it is attached. (See the figure) The string is attached to the ball such that a line along the string passes through the center of the ball. The string is 1.50 m long and the ball has a radius of 0.150 m with a mass of 0.470 kg. What is the tension in the rope? What is the force the pole exerts on the ball?