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**1. Homework Statement**

A pendulum has a period of 1.8 s.

**2. Homework Equations**

Its length is doubled. What is its period now?

The original pendulum is taken to a planet where g = 16 m/s2.

What is its period on that planet?

**3. The Attempt at a Solution**

T=2pi sqrt(L/g)

1.8=2pi sqrt(2L/g)

I dont what Im suppose to solve for. This looks like a very simple problem, but i cant seem to figure it out. Maybe i'm over thinking it.