1. The problem statement, all variables and given/known data A fisherman's scale stretches 4.1 cm when a 2.7 kg fish hangs from it. (a) What is the spring stiffness constant? 645.3658537 N/m (b) What will be the amplitude and frequency of vibration if the fish is pulled down 2.0 cm more and released so that it vibrates up and down? amplitude ? cm frequency 2.460601261 Hz 2. Relevant equations I thought it was as simple as 2.0+4.1=6.1 cm. I was wrong. 3. The attempt at a solution Shown above.