A 1-kg rock suspended above water weighs 10 N. When the rock is suspended beneath the surface of the water, the scale reads 8 N.
a. What is the buoyant force on the rock?
b. If a container of water on a bathroom-type scale weighs 10 N, what is the scale reading when the rock is suspended beneath the surface of the water?
c. What is the scale reading when the rock is released and rests at the bottom of the container?
(a)
The buoyant force on the rock.
Answer to Problem 54A
The buoyant force on the rock is
Explanation of Solution
Given:
The weight of the 1-kg rock suspended above water is
The weight of the 1-kg rock suspended beneath the surface of water is
Calculation:
The buoyant force on the rock is,
Conclusion:
Thus, the buoyant force on the rock is
(b)
The scale reading when the rock is suspended beneath the surface of the water.
Answer to Problem 54A
The scale reading when the rock is suspended beneath the surface of the water is
Explanation of Solution
Given:
The weight of the 1-kg rock suspended above water is
The weight of the 1-kg rock suspended beneath the surface of water is
The weight of a container of water on a bathroom type scale is
Calculation:
Refer to part (a).
The buoyant force on the rock is
The scale reading when the rock is suspended beneath the surface of the water
Conclusion:
Thus, the scale reading when the rock is suspended beneath the surface of the water is
(c)
the scale reading when the rock is released and rests at the bottom of the container.
Answer to Problem 54A
The scale reading when the rock is released and rests at the bottom of the container is
Explanation of Solution
Given:
The weight of the 1-kg rock suspended above water is
The weight of the 1-kg rock suspended beneath the surface of water is
The weight of a container of water on a bathroom type scale is
Calculation:
The scale reading when the rock is released and rests at the bottom of the container as follows:
Conclusion:
Thus, the scale reading when the rock is released and rests at the bottom of the container is
Chapter 19 Solutions
Conceptual Physics: The High School Physics Program
Additional Science Textbook Solutions
Essential University Physics: Volume 2 (3rd Edition)
Essential University Physics: Volume 1 (3rd Edition)
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
University Physics (14th Edition)
University Physics with Modern Physics (14th Edition)
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON