
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
- An object is placed 24.1 cm to the left of a diverging lens (f = -6.51 cm). A concave mirror (f= 14.8 cm) is placed 30.2 cm to the right of the lens to form an image of the first image formed by the lens. Find the final image distance, measured relative to the mirror. (b) Is the final image real or virtual? (c) Is the final image upright or inverted with respect to the original object?arrow_forwardConcept Simulation 26.4 provides the option of exploring the ray diagram that applies to this problem. The distance between an object and its image formed by a diverging lens is 5.90 cm. The focal length of the lens is -2.60 cm. Find (a) the image distance and (b) the object distance.arrow_forwardPls help ASAParrow_forward
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