7. Two uniform cylinders have different masses and different rotational
inertias. They simultaneously start from rest at the top of an inclined plane
and roll without sliding down the plane. The cylinder that gets to the bottom
first is: (A) the one with the larger mass (B) the one with the smaller mass (C)
the one with the larger rotational inertia (D) the one with the smaller
rotational inertia (E) neither (they arrive together).
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