What is the frequency of the oscillator?

A 2.48-m long rope has a m of 0.165 kg. The tension is 61.1 N. An oscillator at one end sends a harmonic wave with an amplitude of 1.15 cm down the rope. The other end of the rope is terminated so all of the energy of the wave is absorbed and none is reflected. What is the frequency of the oscillator if the power transmitted is 113 W?