# Harmonic oscillator

## Homework Statement

A harmonic oscillator oscillates with an amplitude A. In one period of oscillation, what is the distance travelled by the oscillator?

## Homework Equations

I'm not sure which equation applies if any?

## The Attempt at a Solution

My guess was 2A but the answer was 4A.

I'm sure this is very easy, but can you please point me in the right direction?