Suppose a diving board with no one on it bounces up and down in a simple harmonic motion with a frequency of 4. 85 Hz. The board has an effective mass of 12 kg. * * What is the frequency, in hertz, of the simple harmonic motion of a 71. 5-kg diver on the board? Wat is he frequens, in here, at de simple harmonie motion of 71 kg diver on the band?