Effect does the amplitude have on the period of a pendulum?

Question

Effect does the amplitude have on the period of a pendulum?

Answer 1

The amplidtude has no effect on the period.

Answer 2

Amplitude of what?

The period is a function of pendulum radius, and gravitational constant.

Answer 3

As long as the amplitude remains slow, the period depends only on the length.

Pendulum period in seconds

T ≈ 2π√(L/G)

L is length of pendulum in meters

G is gravitational acceleration = 9.8 m/s²

But for large amplitude, the angle does have some effect. The equations are complicated, and are given in:

http://en.wikipedia.org/wiki/Pendulum