Pendulum Live Wallpaper.
The Pendulum Live Wallpaper brings you the classic Newton's Cradle desk item for your Android device's home screen. Even if you don't know the name, you probably recognize it: five balls hanging from a frame--the ball on one end swings forward, sending the ball on the other end swinging outward, which then returns, sending the first out, and so on endlessly. Adjust the animation speed to suit your phone and needs.
Works for phones with live wallpaper feature. Not all handsets support the live wallpaper feature. If you find any bugs please do not hesitate to contact me at e-mail and I will take care of it ASAP.