Me and my friend are working on an old railway turntable for a museum, but we run into some problems. We need to know the force we needed to turn it with an electric motor, after spending a week trying with angular momentum we hit a dead end. The train that going to use the turn table wegint 150ton and the turntable organiseert self is about12ton,19.8m long in the end we came up with some ridiculous numbers. Anybody have any suggestions on how should we do this? It wil be a great help.