[SOLVED] Manipulating a formula 1. The problem statement, all variables and given/known data "An instructor sets up an oscillating vertical mass-spring system (k=6.05 N/m). The maximum displacement is 81.7 cm and the maximum speed is 2.05 m/s. What is the mass of the oscillator? Answer: 0.961kg 2. Relevant equations vmax=A*the square root of k/m (maximum speed of a mass-spring system) 3. The attempt at a solution Well, I probably could solve this, if only I could manipulate the formula for m. I've tried m = the square root of V*A divide by k squared (sorry, I don't know how to use symbols) and other similar manipulations, but it just doesn't work for me. Note: I am a complete "n00b" at physics and am doing practice problems to improve.