# Probability Density Function for a Pendulum?

1. Oct 2, 2012

### bencmier

What is the probability density equation as a function of angle for a simple pendulum using the small angle approximation?

I got 1/(2 pi θmax) sec(sqrt(g/L)t) but it doesn't seem right.

2. Oct 2, 2012

### HallsofIvy

Staff Emeritus
The probability density of what random variable?

3. Oct 2, 2012

### bencmier

"as a function of angle"