Concept explainers
Place yourself facing the edge of an open door. Position your feet astride the door with your nose and abdomen touching the door's edge. Try to raise on your tiptoes. Why can't this be done?
Answer to Problem 11Q
Solution:
The center of mass of your body cannot move forward because gravity counteracts the torque made by the feet when rising and therefore your feet return to the ground.
Explanation of Solution
Given info:
Position your feet astride the door with your nose and abdomen touching the door's edge
This is due to the position of the center mass of the human body. Before standing in front of the edge of an open door, if you stand on tiptoe the center of mass of your body moves slightly forward. Now, when you have your feet on the door with your nose and abdomen touching the edge of the door and you try to get up on tiptoe, the center of mass of your body cannot move forward because gravity counteracts the torque made by the feet when rising and therefore your feet return to the ground.
Chapter 9 Solutions
Physics: Principles with Applications
Additional Science Textbook Solutions
The Cosmic Perspective
Essential University Physics (3rd Edition)
Life in the Universe (4th Edition)
Cosmic Perspective Fundamentals
University Physics Volume 2
Conceptual Integrated Science
- 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