A string of linear density 1.60 g/m is stretched between clamps 48.0 cm apart. the string does not stretch appreciably as tension in it is steadily raised from 15.0 N at t = 0 to 25.0 N at t = 3.50 s. Therefore, the tension as a function of a time is given by expression T = 15.0 +10.0t/3.50, where T is in newtons and t is in seconds. The string is vibrating in its fundamental node throughout this process. Find the number of oscillations it completes during the 3.50-s interval.