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Homework Help: Translation of inclined bar

  1. Sep 28, 2010 #1
    1. The problem statement, all variables and given/known data
    I have a question on pure translation of inclined bar. The problem statement is:
    A homogenous slender bar with a mass of 4 kg and a length of 500mm being pushed along the smooth horizontal surface by a horizontal force P=60N. Determine the angle θ for translation. What is the accompanying acceleration? (FBD and kinetic diagram attached)

    2. Relevant equations
    I used the following equations:
    ⅀MG=0 (since rod is in translation)

    3. The attempt at a solution
    The results i arrived at are:
    θ = 33.4°
    a = 15m/s2

    My question is, there exists a moment about point A (point of contact between bar and contact surface) equal to 8.26Nm. What is the physical meaning/significance of this moment? Would not the rod rotate about A due to this moment? Requesting for help please.
    If my question has already been discussed earlier, request some of you to give link to those threads.
    Thanks in advance.

    Attached Files:

  2. jcsd
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