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A person pushes a book against a wall so that the book does not move. [A] draw a free body diagram for the book. [B] for each force that appear on your free-body diaram, identify the corresponding force that completes the Newton's third law (or action-reaction) force pair.

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Rochelle Enrera
Rochelle EnreraLv10
23 Mar 2021

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A) A siring is tied to a book and pulled lightly as shown at right. The book remains in contact with the table and does not move. Draw a free-body diagram for the book. Label each of the forces exerted on the book as you were instructed in the tutorial Forces.

B) How do the forces exerted on the book, in this case, compare to the forces exerted on the book when the string is not present? List any forces that are the same (i.e., same type of force, same direction, and same magnitude) in both cases. Make a separate list of forces that change (or are not present) when the string is pulled.

C) Consider the following statement made by a student about a book at rest on a level table: "The two forces exerted on the book are the normal force directed up and the weight of the book directed down. These are equal and opposite to one another. By Newtons third law they are (action-reaction) force pair, so the normal force is always equal to the weight of the book." Do you agree with the student? Explain why you agree or disagree.

D) Consider a book on top of a level table while the book is being pressed straight down by a hand. In the space below, draw a free-body diagram for the book. Label the forces as you did in the tutorial Forces. How do the forces exerted on the book in this case compare to the forces exerted on the book when the hand is not pushing? List any forces that are the same (i.e., same type of force, same direction, and same magnitude) in both cases. Make a separate list of forces that change (or are not present) when the hand is pressing down on the book.

E) When the hand is pushing down on the book, is the magnitude of the weight equal to the magnitude of the normal force exerted by the table on the book? How can you tell?

Select the one that is not one of Newton's Law of motion.

 

A) equal and opposite reaction force acts for each action.

B) An object in uniform motion in the absence of external force continues to move in the same direction.

C) Rate of change of momentum is equal to the net force applied

D) The body has some masses attract each other with a constant force.

 

For each of the case below, answer the following:

Identify the relavant forces acting on the person. Does Newton's Third Law apply? What are the third law pairs for each? Why is/isn't the person accelerating?

Case A) A person pushes on a wall without moving

Case B) A person runs and accelerates

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