I need help with the question 25. The three star (hardest) problem.
well conservation of energy is
The Attempt at a Solution
Wouldn't increasing the Radius increase the Inertia by a factor of 4 and decreasing the mass reduce it only by a factor of 2. So the velocity should be less due to the increased inertia and the block would fall slower.
Anyone have any idea why the block would fall faster than the original?