It only uses 4 chords, here's how I fret them:

CAPO 2ND FRET

e | ---3----------3------------3-----------2--------------------------------------- | 
B | ---3----------3------------3-----------3--------------------------------------- | 
G | ---------------------------------------2--------------------------------------- | 
D | ---2-----------------------2--------------------------------------------------- | 
A | ---3----------2------------2-----------x--------------------------------------- | 
E | ---x----------3------------------------x--------------------------------------- | 

   C9        G           Em7          D


Strumming pattern is: Down Down, Up-Down (repeated consistently through the song)


Enjoy!


Intro: G



      C9        G
I've got soul, my mama says so
     Em7                          D
Says son you'll move up, you're a fighter, I know
       C9      G
You will see that life isn't free
       Em7            D
And everyone dies eventually


G                 C9
Gravity, you're knocking me out
       Em7                  D
You're shaking me up 'til I twist and I shout
     G
Oh, gravity
   C9
It's okay in the clouds
       Em7         C9          D           G
But I love it right here with my feet on the ground


   C9     G
Celebrate, before it's too late
       Em7                         D
Your fear of the future's your greatest mistake
        C9       G
Here's a song, we sing it out loud
         Em7                      D
And ain't nothing as sweet as the sound of a crowd


(Alright, now)
G                C9
Gravity, you're knocking me out
         Em7                 D
You're shaking me up 'til I twist and I shout
     G
Oh, gravity
   C9
It's okay in the clouds
      Em7         C9           D           G
But I love it right here with my feet on the ground
  Em7         C9           D           G
I love it right here with my feet on the ground


G                   C9
Gravity, you're knocking me out
         Em7                  D
You're shaking me up 'til I twist and I shout
        G
Oh, gravity
    C9
It's okay in the clouds
      Em7         C9           D           G
But I love it right here with my feet on the ground
  Em7         C9           D           G
I love it right here with my feet on the ground

And I'm singing,
G                 C9
Gravity, you're knocking me out
          Em7                 D
You're shaking me up 'til I twist and I shout
       G
Oh, gravity
   C9
It's okay in the clouds
       Em7        C9          D            G
But I love it right here with my feet on the ground
  Em7          C9          D            G
I love it right here with my feet on the ground
  Em7          C9          D            G
I love it right here with my feet on the ground
  Em7          C9          D            G
I love it right here with my feet on the ground
  Em7          C9          D            G
I love it right here with my feet on the ground
  Em7          C9          D            G
I love it right here with my feet on this ground
  Em7          C9          D            G
I love it right here with my feet on the ground