Essential University Physics: Volume 1 (4th Edition)

Published by Pearson
ISBN 10: 0-134-98855-8
ISBN 13: 978-0-13498-855-9

Chapter 10 - Section 10.5 - Rolling Motion - Conceptual Example - Page 189: 10.1


The hollow ball reaches the bottom later.

Work Step by Step

The hollow ball has more mass located further from its center, so the inertia is higher for the hollow ball. As a result, more of the energy goes to causing it to rotate, meaning that less of the energy goes to translational velocity, hence causing it to get to the bottom of the ramp at a later time.
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