(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] Torque Calculation

I am not a mechanical engineer. I am a computer software engineer that likes to learn about different things. (I had to mention it because I was shunned in eng-ti**.com) I am working on a project and need to buy a motor for it. Obviously, before purchasing a motor, I need to know what type to get. My final configuration will be a pulse width modulation speed controller connected to the motor. From the research I have done, I want to be at about 75% of the ability of the motor. The motor will have a wheel 6" in diameter attached to the spindle. Attached to that wheel is a rod connected to a load centered above the motor assembly. The load is 20 lbs. The motor will continuously spin at no more than 60 rpm and will move the load up and down inside of the chamber. I do not know the calculation to determine the torque I will need to move the load. Can someone please help me with the formula? I would like to know the formula used for the calculation as well. I attached a diagram to demonstrate what I am trying to accomplish. Any help is greatly appreciated.

Trent

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# Motor Torque Calculation

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