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Homework Help: Force balance equations with moving base

  1. Sep 29, 2016 #1
    1. The problem statement, all variables and given/known data
    IMG_20160929_162844.jpg
    Given:
    AD=DC = 9m
    P=78kN
    S=25Kn
    Angle alpha = 35 deg
    A is static but B is movable

    I need to solve forces on the bases A and B
    I do not understand where do I mark the forces if there is a base that can move.

    2. Relevant equations


    3. The attempt at a solution
    My attempt:
    IMG_20160929_162955.jpg
    I am not sure whether there should be Bx or Ax.
     
  2. jcsd
  3. Sep 29, 2016 #2
    Is there only By on the base B? If so, is the B vector still calculateable with trigonometry, or the only force there will be By, without any Bx?
     
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