Chapter 8 - Chapter 8 Forces on systems Newtons 3rd law...

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

View Full Document Right Arrow Icon
Chapter 8 – Forces on systems Newtons 3 rd law Every force occurs as one member of an action/reaction pair of forces The two members of an action/reaction pair act on two different objects The two members of an action/reaction pair are equal in magnitude but opposite in direction Consequence of Newton’s 3 rd Law: a closed isolated system cannot accelerate due to internal motions (the “no space-drive” theorem). How to do Draw each object separately. Place them in the correct position relative to other objects. Don’t forget to include objects like the earth that may not be mentioned in the problem. Identify every force. Draw the force vector on the object on which it acts. Label each with a subscripted label such as F A on B The usual force symbols, such as n and w can be used. Identify the action/reaction pairs. Force F A on B goes with force F B on A . Connect the two force vectors of each action/reaction pair with a dotted line. When you’re done, there should be no unpaired forces. Identify the objects that are systems of interest.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/28/2008 for the course PHY 2111 taught by Professor Johnevans during the Summer '07 term at Georgia Perimeter.

Page1 / 4

Chapter 8 - Chapter 8 Forces on systems Newtons 3rd law...

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

View Full Document Right Arrow Icon
Ask a homework question - tutors are online