What is the Free Body Diagram for a Chain with Four Links?

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Homework Help Overview

The discussion revolves around drawing a free body diagram (FBD) for a chain consisting of four links. The original poster is seeking clarification on the forces acting on each link, particularly focusing on the first link connected by a rope.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to identify the forces acting on the first link, including tension, weight, and a force from the second link. Questions are raised about the nature of the force from link two and whether it can be classified as a normal force. Some participants suggest that only the forces from the adjacent links and gravity need to be considered for each link.

Discussion Status

Participants are actively engaging with the problem, providing insights into the forces involved. There is a recognition that the influence of other links may not need to be directly considered for the first link, as their effects are transmitted through the adjacent link. Guidance has been offered regarding the forces acting on the links, but no consensus has been reached on all aspects of the FBD.

Contextual Notes

The original poster is working within the constraints of a homework assignment, which may impose specific requirements or assumptions about the forces acting on the links.

jhson114
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hello. I need help drawing free body diagram for four links on a chain. The picture looks like this:

| <-thats a rope
8 <-these are links; they should all be connected
8

heres a good picture of a chain:
http://homepage.mac.com/kpreid/povray/chain.png

the first link is connected by a rope, and i need to draw FBD for each links.
For the first link, i have Tension force from the rope, Weight force, and Normal force from link two. Is this correct? how would you show all other weights pulling link 1 beyond the link 2? and is it even correct to call the force link two is applying to link 1 a normal force?
help please. thank you
 
Last edited by a moderator:
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help please T.T
 
free body diagram

Each link of the rope is uder the influence of just three forces. Two normal forces - from the top link and the bottom link and one of gravity.

You need not consider the influence that links other than link 2 are applying on link 1. Because if there is such an influence, it is just through link 2 and no other direct influence.

rest is correct

spacetime
www.geocities.com/physics_all/index.html
 
thanks a lot for the help :)
 

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