Is there a way to figure out the torque needed to rotate a work table without knowing the center of gravity? I have a customer who wants to use a 40:1 ratio gearbox to rotate a work station, the gearbox would have an 11" wheel on the input shaft for the operator to turn. However the information that the customer has provided is rather limited as most of his answers are "it's proprietary". What I do know is the largest diameter of the fixture and the part being worked on is 40inches. The length is 83inches and has a weight of 930 pounds. Since I am rather limited on information, I was wondering if I could calculate the torque by treating the rotating portion as a solid cylinder, and calculate the moment of inertia, and acceleration? Thanks to everyone who replies for the help.