The disc is probably broke, it might not be the xbox.
I suggest cleaning it off or buying a new copy of the game.

Take the disc out and clean it, or trying installing it on the hardrive. It may be the disc tray also try reseting the xbox or changing the disc for another then retrying Cod.

Go to a game shop and get the disc cleaned?

Envelope wrote Hey TTG

My problem that i am facing today is me and my brother
were getting ready to play some Mw2 and when we went to
put it in the xbox started reading then disc then changed and said
open tray like saying nothing was put in the xbox.
What should i do to fix this problem?

Identify your problem, inspect the disc for any markings/scratches which may stop it working, also try different games in the disc drive to see if that's the problem.

Have you tried the good old fashioned rub that always works for me ;)

I tried a different disc and it worked so it couldn't be the xbox,
and i what should clean the disc with there are NO visible scraches ill post a picture

Blow inside the disc reader?

Envelope wrote Hey TTG

My problem that i am facing today is me and my brother
were getting ready to play some Mw2 and when we went to
put it in the xbox started reading then disc then changed and said
open tray like saying nothing was put in the xbox.
What should i do to fix this problem?

First thing you should do is clean the disk and check for cracks in the disk

2nd thing get a dvd laser disk cleaner and try that

if those fail then its time to send your console to a professional and have the laser replaced
I do this myself my shop is in the xbox 360 marketplace