Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 10 - Fluids - Questions: 2

Answer

A sharper tool has a smaller area and exerts a greater pressure with the same amount of force than a blunt tool with a greater surface area on the point.

Work Step by Step

A sharp pin can pierce your skin when pushed with a certain force, though the same force does not cause the blunt end of a pen to pierce your skin. The pressure (force per unit area) applied by a tool determines whether your skin is pierced, not the net force applied.
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