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Calculating Pin Friction

  1. Apr 19, 2009 #1
    1. The problem statement, all variables and given/known data

    I'm trying to determine the friction of a pin joint that will be loaded differently depending on the position of the linkage.

    2. Relevant equations

    I know the equation for frictional force is F="mu"*N, where "mu" is either the coefficient of static or kinetic friction depending on if the surface is in motion, but I'm not sure how to apply that to a pin joint.

    3. The attempt at a solution

    Im assuming the pin to be "loose fitting" so that friction will be basically limited to a point on the surface. And if I know the force applied to the joint, can I just take that force as N in the equation and and find the appropriate "mu" to solve for the frictional force? I'm just looking for a decent approximation for the friction.
  2. jcsd
  3. Apr 21, 2009 #2
    Since there have been no respones, should I assume that my logic is reasonable? Or just nobody has a decent idea about it either?
    Any input would be appreciated.

  4. Apr 21, 2009 #3
    Only in 1st year, but that logic sounds right based on my lecture notes
  5. Apr 21, 2009 #4

    I'm really just looking for a rough estimate of friction, but I was mainly looking for input just to make sure I wasn't overlooking something too major.
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