Concept explainers
(a)
The frictional force on the car.
(a)
Answer to Problem 28P
The frictional force on the car is
Explanation of Solution
Given that the radius of the curved path is
Let the the
The Free-body diagram of the car in the given situation is shown in Figure 1.
Write the condition for equilibrium of forces in the
Apply the condition in equation (II) to the free-body diagram of the car.
Here,
Solve equation (III) for
Apply the condition in equation (I) to the free-body diagram of the car.
Here,
Use equation (IV) in (V) and solve for
Conclusion:
Substitute
Therefore, the frictional force on the car is
(b)
The speed with which one must drive the car so that the
(b)
Answer to Problem 28P
The speed with which one must drive the car so that the force of friction is zero is
Explanation of Solution
Write the expression for the force of friction for the given track.
The force of friction to be zero, the term
Solve equation (VII) for
Conclusion:
Substitute
Therefore, the speed with which one must drive the car so that the force of friction is zero is
Want to see more full solutions like this?
Chapter 5 Solutions
Physics
- 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