Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 8 - Think and Discuss: 107

Answer

The can of water will roll faster.

Work Step by Step

The liquid water slips inside the can instead of rotating around the can's central axis, so it does not contribute to the rotational inertia. The can of liquid water behaves almost like an object that slides frictionlessly down the ramp, which would reach the bottom faster than a rolling object.
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