I don't recognise that equation. What does it relate to. It is however surprisingly similar to the equation of a pendulum which is:
T = 2π (l/g)^0.5 (that is a lowercase L, not a 1)
Where T = time of oscillation in seconds, L is the length of the pendulum and g is the acceleration due to gravity.
It's probably a mass oscillating horizontally on two springs, I think. You can prove it via experiment. As stated above, also related to the pendulum equation.