physics
posted by gilbert .
The frequency of vibration of an objectspring system is 8.00 Hz when a 3.00 g mass is attached to the spring. What is the force constant of the spring?

Frequency = [1/(2 pi)]*sqrt(k/m) = 8
m = 0.003 kg
Solve for k, the spring constant. It will have units of newtons per meter.
k = m*(16 pi)^2