My First Attempt at a Newtons Cradle

I have put this video on YouTube as I couldn't figure out how to upload it onto Blogger.

Not too bad for a first try I don't think but still a lot that could be done to improve it. I created this in the image ready part of the new Photoshop CS3. I think the swing to the right is much more realistic so need to work on the swing to the left. I had a bit of a problem with the timing of the swing as I couldn't quite get right the timing such as the amount of frames at the top of the arch to make look as if slowing down due to the gravitational pull.