Identifying Newtonian force pairs

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Homework Help Overview

The discussion revolves around identifying Newtonian force pairs, specifically in the context of a bottle resting on a table. Participants explore the nature of forces acting on the bottle and the table, questioning the definitions and relationships between these forces.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants inquire about the Newtonian force pair that includes the normal contact force exerted by the table on the bottle. Some suggest considering the interaction from the table's perspective, while others reference Newton's Third Law in relation to the normal force.

Discussion Status

The discussion is active, with participants sharing insights about the nature of forces at play. Some have provided guidance on how to think about the forces involved, particularly in terms of electromagnetic interactions at the atomic level.

Contextual Notes

There is a focus on distinguishing between different types of forces and their interactions, with some participants expressing confusion about the definitions and relationships of these forces. The original poster seeks clarification on the objects involved in the force pairs.

MBBphys
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Homework Statement


Hello,
Regarding the idea of Newtonian force pairs, imagine a bottle resting on a table:
Weight force exerted on bottle by Earth and normal contact force on bottle by table are not Newtonian force pairs because they are different types and act on the same object.
Weight force exerted on bottle by Earth and weight force exerted on Earth by bottle are Newtonian forces.

So what Newtonian force pair includes the normal contact force on bottle by table? While making my notes, this is what I did not understand.
Thanks :)

Homework Equations


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The Attempt at a Solution


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MBBphys said:
So what Newtonian force pair includes the normal contact force on bottle by table?
Consider the same interaction from the table's perspective.
 
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Remember Newton's Third Law and apply it to the normal force. The table is exerting a normal force on the bottle, therefore...
 
The atoms that comprise solids have electron clouds which push on each other. So most such forces can be considered electromagnetic. One electron pushes and is pushed, creating a force pair.

The bottle's electrons push on the table's electrons and the table's electrons push on the bottle's electrons.

Electrons can also pull. The bottle has electron bonds that hold it together.
 
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MBBphys said:

Homework Statement


Hello,
Regarding the idea of Newtonian force pairs, imagine a bottle resting on a table:
Weight force exerted on bottle by Earth and normal contact force on bottle by table are not Newtonian force pairs because they are different types and act on the same object.
Weight force exerted on bottle by Earth and weight force exerted on Earth by bottle are Newtonian forces.

In the following, what are the two objects involved?
So what Newtonian force pair includes the normal contact force on bottle by table? While making my notes, this is what I did not understand.
Thanks :)

Homework Equations


N/A

The Attempt at a Solution


N/A
 
Jeff Rosenbury said:
The atoms that comprise solids have electron clouds which push on each other. So most such forces can be considered electromagnetic. One electron pushes and is pushed, creating a force pair.

The bottle's electrons push on the table's electrons and the table's electrons push on the bottle's electrons.

Electrons can also pull. The bottle has electron bonds that hold it together.
Thank you! I got it now :)
 

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