[SOLVED] Dampened Oscillations Problem A pendulum of length 1.00 m is released from an initial angle of 15.0°. After 1200 s, its amplitude is reduced by friction to 5.5°. What is the value of b/2m? How do you do this one? I know it has something to do with the formula w= sqrt(W0^2 - (b/2m)^2). I tried plugging in sqrt(g/L) for W0, but I don't know what to use for the first w.