Estimate the force a person must exert on a string attached to a 0.140 kg ball to make the ball revolve in a circle when the length of the string is 0.600 m. The ball makes 1.00 revolutions per second. Do not ignore the weight of the ball. In particular, find the magnitude of FT, and the angle it makes with the horizontal. [Hint: Set the horizontal component of FT equal to maR; also, since there is no vertical motion, what can you say about the vertical component of FT?] I attached the figure below. Ok so i did all the calculations to get the magnitude of the force and got 3.518 which is correct. I assumed to get the angle i just do tan inverse of 3.518 which gives me 74.13. Then i minus that from 90 to get angle of 15.86 degrees. Which is not correct . Any help on how to get the angle.