Please help

A student is swinging a 2.2kg ball attached to a 0.65m long string in a vertical circle as shown (measured from the hand to the center of the ball). When the ball reaches the highest point the ball is traveling 3.9m/s. Neglect drag. number of forces in plane: Force(s) towards center: Are all forces balanced? What is the centripetal acceleration of the ball? unit What is the centripetal net force on the ball? unit How much tension is in the string? unit