What is this formula for

T=2√L/g

This formula was in my geometry textbook and I want to know what it is used for.

it's a Physics formula for the motion(pendulum):
T = 2√(L/g)
where T is the period, L is the length of the pendulum, and g is the acceleration due to gravity (a constant = 9.8 m/sec^2)

The period of swing of a simple gravity pendulum depends on its length, the local strength of gravity, and to a small extent on the maximum angle that the pendulum swings away from vertical, θ0, called the amplitude. It is independent of the mass of the bob. If the amplitude is limited to small swings, the period T of a simple pendulum, the time taken for a complete cycle, is:
T = 2π√(L/G) where L is the length of the pendulum and g is the local acceleration of gravity.

In mathematics, the binary logarithm (log2 n) is the logarithm to the base 2. It is the inverse function of n ↦ 2n. The binary logarithm of n is the power to which the number 2 must be raised to obtain the value n. This makes the binary logarithm useful for anything involving powers of 2, i.e. doubling. For example, the binary logarithm of 1 is 0, the binary logarithm of 2 is 1, the binary logarithm of 4 is 2, the binary logarithm of 8 is 3, the binary logarithm of 16 is 4 and the binary logarithm of 32 is 5.

T=2(pi)√L/g is the period of a simple pendulum. L=length from pivot point, g=gravity

looks like the formula for the period of a pendulum.

T = time
L = pendulum length
g = acceleration due to gravity

I think it is the formula for breast milk but you would have to suck it and see !

check google for more info