A 5.09-kg ball hangs from the top of a vertical pole by a 2.07-m-long string. The ball is struck, causing it to revolve around the pole at a speed of 4.51 m/s in a horizontal circle with the string remaining taut. Calculate the angle, between 0 degrees and 90 degrees, that the string makes with the pole. Take g = 9.8 m/s2.
Find the tension of the string.