I did a project on Wood vs aluminum baseball bats to see which ball would travel farther when hit. I don't know If you play sports or anything but it was very fun for me considering I enjoy playing the game. You just got to be able to hit a ball with a bat
F=(Gm1m2)/r^2
ratio = (1/6370^2) / (1/7770^2) = 1.48786378457