# Pendulum bob oscillation

1. May 18, 2010

### william kat

a pendulum bob of mass m hangs on a string of length l. what is the espression for the arc length of the bob if its discplaced through an angle theta.

2. May 18, 2010

### Mu naught

well if you know the maximum angle of displacement the arc length is simply

theta*l

3. May 26, 2010

### william kat

problem is, the angle of discplacement is not known. its part of the expression