1. The problem statement, all variables and given/known data I am doing the old frozen can vs liquid can experiment and one of the questions asks that if cans with different diameters were used with the same contents (so same mass relative to diameter size) how would this effect the time taken for the cans to go down a ramp (how would if differ from the cans I used). 2. Relevant equations Rot Inertia of a cylinder = 0.5mr^2 3. The attempt at a solution Straight away I know the larger the diameter means the larger the rotational inertia is going to be, therefore the more likely it is going to remain rest and the slower it will reach the bottom of the ramp and the opposite would be true for a smaller diameter - that works for the frozen contents, for the liquid contents the same would happen as even though the liquid is not rotating with the can the can still has an increase/decrease in its mass and radius. I feel like I'm missing something here, or maybe I'm not and I'm over complicating it. A nudge in the right direction or confirmation on what I'm saying would be appreciated. Thanks.