The two spheres have different rotational inertias, of course. You can see which will roll down the incline faster by extending the reasoning I gave in post #12.What about the following situation:
2 spheres with the same mass and radius are released on an incline, one of the spheres is hallow and the other one is solid. Which sphere would reach first to the bottom?
What's stopping them?Which sphere would travel larger distance (after the incline) before it stops?