changed belt but won't grank on 1998 Pontiac Grand Am

I was driving my car on the higway and the battery light came on. when I got home it would not crank back up beccause the belt had popped. I replaced the belt and it still won't crank. I just here a clicking noise

Asked by for the 1998 Pontiac Grand Am
Charge the battery. It has been run down under 12 volts and that is needed for the computer and starter to turn.