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Free Body Diagram for Chains

  1. Oct 19, 2004 #1
    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

    heres a good picture of a chain:

    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
  2. jcsd
  3. Oct 19, 2004 #2
    help please T.T
  4. Oct 19, 2004 #3
    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

  5. Oct 19, 2004 #4
    thanks alot for the help :)
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