1. The problem statement, all variables and given/known data "A mass m = 16.0 kg is attached to the lower end of a massless string of length L = 71.0 cm. The upper end of the string is held fixed. Suppose that the mass moves in a circle at constant speed, and that the string makes an angle theta = 25deg with the vertical, as shown in the figure." (See attachment on page 2) 2. Relevant equations T = 2pi*r/v 3. The attempt at a solution I found tension = (16)(9.8)/(cos25deg) (not sure if this is the correct answer though but I think it is) T = 2pi*r/v I found radius = 0.71m * (sin25deg) but I need to find velocity I'm guessing so that I can get period T. Any help would be greatly appreciated! Thanks in advance!