Science Buddies: "Ask an Expert"

Hello Scientists,
I have a couple of questions on this science project, The Science of Spin: A Baseball Pendulum Advanced Medium.
For my first question, the grid were supposed to make out of cardboard, what are the dimensions of the grid? Also do we hang the pendulum on something or hold it with our hand?
My next question is, I am interested in this project, i want to incorporate different pitches into this project? How can I make these different pitches relate to this pendulum project of how pitchers throw different pitches and how can I replicate the spins of these pitches; fastball, knuckle, etc?
Thanks
Mark Scheble

Hi Mark,

Your project has to do with the physics of a spinning object and how spin affects linear motion. This is the Life, Earth and Social Sciences forum. I think you would be more likely to get a useful response from experts on the Physical Sciences forum.

It is a really interesting subject, but i think an engineer or physicist could help you better than a life scientist. Good luck!

Sybee