An object, suspended from a vertical spring, oscillates up and down at 3.76 Hz. How much would this object stretch the spring, if it were hanging at rest?
2 pi f= sqrt (k/m) = 2 pi * 3.76
so k/m = 558
m g = k X
X = 9.81 /558 meters
so k/m = 558
m g = k X
X = 9.81 /558 meters