Hello! I am an electrical engineer and have taken on a task to design a rotating wooden column. See attached image of the column. The requirements are to spin the column 360 degrees in 5 steps of 72 degrees each. The material used is wood. I know what I need to do in order to get it to spin (stepper motor, gear, shaft, bearing etc). How fast does the column need to spin? Not fast. The stepper motor can be stepped however fast the design needs to be (up to a limit). The issue: I don't know how much torque is needed to spin the column. This seems to be a slightly complex problem which I don't have the right background to answer. The torque estimation will help me figure out what size motor i can use. So, I would like to be pointed in the right direction to calculate the torque (internet references, reading materials, actual weight measurements etc). Thanks for looking!