Concept explainers
The physical reason for the buoyant force in terms of pressure.
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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Chapter 21 Solutions
Physics Laboratory Experiments
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