How Can I Prove this Physically 1. The problem statement, all variables and given/known data So I need to do a project where I prove centripetal acceleration. All the cases I've seen of where it's proved is using formulas, though I need an actual project. By an actual project I mean something like http://jedlik.phy.bme.hu/~hartlein/www.mip.berkeley.edu/images/physics/A+0+47.gif Does anybody know how I can prove centripetal acceleration with a physical project behind it? Yes it can involve forumlas, equations also. Though I still need a project for it. 2. Relevant equations a = v^2/r 3. The attempt at a solution Bucket of water - No way of proving so far.