# Rearranging period of pendulum equation to find length

1. Jul 11, 2012

1. The problem statement, all variables and given/known data What is
T=2pi[(sqrt)l/g] rearranged for l= ?

2. Relevant equations

3. The attempt at a solution
Ive tried a few but I just dont know how to do this with sqrt's of a fraction involved.

2. Jul 11, 2012

### grzz

Eliminate the square root by squaring both sides.

3. Jul 11, 2012

When you square both sides, don't forget that you also have to square the factor of 2$\pi$