Hi, nice to find a physics forum. I had a quick question. I'm a television producer and developer, primarily in the unscripted TV area. We're developing a quiz show which utilizes a center circular platform. It's divided into thirds, with a different person standing on their own third. Across from them, not on the platform and stable on the actual stage, is a monitor. The catch for our show is that if you miss a question, you move jobs and positions. So, for instance, the person in position one moves to position two, position two to three, and position three to one. The most visually entertaining way we figured to do this is have the center circular platform rotate. Sort of a sit and spin, if you will, though the players will be standing up and holding onto padded railings. We're trying to make sure we can safely rotate the players only 120 degrees each time to their new position in a speed which takes around five seconds to get to. It'll be starting at a stand still and stopping when the platform rotates 120 degrees to the next position. My question to you physics experts is how fast would we have to rotate a platform that's roughly eight feet in diameter to move 120 degrees in five seconds, give or take a second. We're not looking for anything high speed. It's more of a time penalty and a visual aid for viewers than anything. My second question then is, with padded railings and grips so you can hold on tightly, would this be safe at all to do, given the speed? If you need any more information, I'd be glad to supply it. Thanks!