Conceptual Physics (12th Edition)

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

Chapter 14 - Think and Explain: 51

Answer

It would increase by a factor of 4.

Work Step by Step

When the diameter is doubled, the area is quadrupled. Force is pressure multiplied by area, so the force exerted by the valve stem also goes up by a factor of 4.
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