Usually from 2 windings out of phase. A run and a start winding.
The start winding will have a series capacitor for phase shift, which is cut-out by a centrifugal switch on the shaft opening when rpm of rotor attains a specific rpm.
If the rotor is jammed as suggested by "Technobuff", this can easily be checked by turning the rotor, without power supplied. Usually by a cooling fan on drive shaft.
It could also be you've damaged 1 of the windings, or the centrifugal switch, so that it remains open.
However, if it is a shaded pole motor, the rotor is probably jammed.
A shaded pole motor consists of 1 main winding and single turn copper ring embedded in the pole ends of the motor stator.
The copper rings provide the second out of phase field to start the motor, but are not cut out when motor attains rpm.
AS the saying goes, "If it works, don't fix it".
I guess I'm stupid now.
I tore apart my mom's old fan because it had a pretty neat induction motor. It's got a stator and copper winding and a rotor that spun around just fine when I tore it apart.
Now I'm trying to put it back together and the rotor won't spin. I hear the 60hz hum, much louder than before I tore it apart, and when I turn off the power and rip it apart again, the rotor metal is really hot. Is there something I'm missing? I know power is reaching the copper wires because I definitely shocked myself like a big moron at one point.
Any guesses?
It may be tripped with Over load,Starter failure, Fuse Blown off , Winding Burned due to Single phasing or Over loading. Bearing failure, any chance of wetness ,cause winding Ground fault or Insulation failure etc. .You are not mentioned what type of Load connected, is it Pump or Machine motor , & its capacity ?.So that I can give many more Points.
My guess is you mechanically jammed the rotor. Either endwise, or rotor against stator.
