Answer
The CG is vertically below the point of support, where the matchstick contacts the rim of the glass.
Work Step by Step
Try it and see. The principles are discussed on pages 140-145.
Conceptual Physics (12th Edition)
by Hewitt, Paul G.
Published by
Addison-Wesley
ISBN 10:
0321909100
ISBN 13:
978-0-32190-910-7
Chapter 8 - Think and Do - Page 154: 33
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