Physics Laboratory Experiments
Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 21, Problem 1ASA
To determine

The physical reason for the buoyant force in terms of pressure.

Expert Solution & Answer
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Answer to Problem 1ASA

The change in pressure between the top and bottom surface of a block in fluid is the buoyant force.

Explanation of Solution

When the object is placed in a fluid either it floats or sinks. The heavy object sinks in fluid and the lighter objects floats. The key parameters to study the forces on the object in a fluid are density and volume of fluid displaced.

The variation in the pressure between the surfaces of an object due to the change in height causes buoyant force. For submerged or floating bodies the pressure at the bottom of an object is not the same as the pressure.

The change in pressure between the top and bottom surface of a block in fluid is the buoyant force.

Conclusion:

Therefore, the change in pressure between the top and bottom surface of a block in fluid is the buoyant force.

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