Concept explainers
Part (a)
The amount of work done against gravity.
Part (a)
Answer to Problem 45P
Solution:
Explanation of Solution
Given:
Inclination of hill =
Height of hill
Diameter of pedals
Mass of bicycle and person
Formula Used:
Work done against gravity = Change in Potential energy
Calculation:
Initial potential energy
Final potential energy
Conclusion: Hence, the work done against gravity=
Part (b)
Average force that must be exerted on the pedals tangent to their circular path.
Part (b)
Answer to Problem 45P
Solution: 433 N
Explanation of Solution
Given:
Inclination of hill =
Height of hill
Diameter of pedals
Mass of bicycle and person
Distance moved in one complete revolution = 5.10 m
Formula Used:
Work done by cyclist in one revolution = tangential force on pedals
Calculation:
Work done against gravity in one revolution = Change in potential energy in one revolution
Change in height in one revolution:
Work done against gravity in one revolution
Circumference of pedals =
=
Work done by cyclist in one revolution = tangential force on pedals
Tangential on pedals
Conclusion: Hence, tangential force acting on the pedals =
Chapter 6 Solutions
Physics: Principles with Applications
Additional Science Textbook Solutions
Physics (5th Edition)
University Physics Volume 2
Applied Physics (11th Edition)
The Cosmic Perspective Fundamentals (2nd Edition)
College Physics: A Strategic Approach (4th Edition)
Physics for Scientists and Engineers with Modern 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