How much energy is needed to support 39 kgs with a solenoid style electromagnet?

I suspend a cradle above the ground from the armature of an electromagnet, and energise it with 40.3 volts DC. I then insert the armature, closing the flux lines. The coil's resistance is 64.3 ohms. How many amps will it draw to support 39 kgs of dead weight? Please include the equations. Thanks.