Designing an Electro Magnet to Lift 1Kg Weight Precisely

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zouzanda
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:redface: 1. i need to design an electro magnet that can lift a 1 Kg weight vertically with the minimum cost possible ANYONE GOT ANY IDEAS and i need it to be very presize i mean the measurements thanx
 
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i already discovered that i should use and rode and turn on it a wire and conect it to a batery but i can find anythin concerning measurements and how many number of turns i need to lift a 1 kg or even how many holtage i need so please can someone point me in the right direction ?