Maybe their program is glitched, but it's pritty easy to make a ou device with it. Take a very thin rectangle, put an axis on the middle, put a spring from very near the axis to the centre of a small ball (as small as they get, or one size up). Make the spring about K 1 - 10 N/m, make air resistance, 0.1 kg/m-s, when let go the spring sould swing below the rotating rectangle, or just hang there. It's starts fast and then slows down to a speed that it stays at, to start it fast just start the ball on the rectangle. And gravity normal.
Someone posted the trial version of WM2 somewhere, (thank you!)
post a screen shot
good idea, here's the starting position.
(https://overunityarchives.com/proxy.php?request=http%3A%2F%2Fimg365.imageshack.us%2Fimg365%2F4223%2Fshot1xo7.png&hash=30e7b1bd40fdfb7589a5d451e1ee909699a3e6e8) (http://imageshack.us)
Nevermind the air resistance is only imediat, anything that starts turning in the same place will continuosly turn.. ::)
hehe ;D