{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Reaction Pairs

# Reaction Pairs - MasteringPhysics Assignment Print View...

This preview shows pages 1–2. Sign up to view the full content.

3/2/08 4:54 PM MasteringPhysics: Assignment Print View Page 1 of 3 http://session.masteringphysics.com/myct/assignmentPrint?assignmentID=1114149 [ Print View ] PHYS 2211 ABCDE Spring 08 MP28: Action/Reaction Pairs Due at 11:59pm on Tuesday, February 26, 2008 View Grading Details Newton's 3rd Law Discussed Learning Goal: To understand Newton's 3rd law, which states that a physical interaction always generates a pair of forces on the two interacting bodies. In Principia , Newton wrote: To every action there is always opposed an equal reaction: or, the mutual actions of two bodies upon each other are always equal, and directed to contrary parts. (translation by Cajori) The phrase after the colon (often omitted from textbooks) makes it clear that this is a statement about the nature of force. The central idea is that physical interactions (e.g., due to gravity, bodies touching, or electric forces) cause forces to arise between pairs of bodies. Each pairwise interaction produces a pair of opposite forces, one acting on each body. In summary, each physical interaction between two bodies generates a pair of forces. Whatever the physical cause of the interaction, the force on body A from body B is equal in magnitude and opposite in direction to the force on body B from body A. Incidentally, Newton states that the word "action" denotes both (a) the force due to an interaction and (b) the changes in

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 3

Reaction Pairs - MasteringPhysics Assignment Print View...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online