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Thread: Reaction forces in a linkage

  1. #1
    Associate Engineer
    Join Date
    Nov 2016
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    1

    Reaction forces in a linkage

    Hello all,


    I need help calculation reaction forces (horizontal and vertical force components) on a linkage. Here's the link to the image:




    The top block moves vertically and a 5 lb force is applied to it. It connects to the first bar using a bearing which connects to the second bar using a bearing as well. These two bars are movable. The second bar is connected to a fixed vertical third bar, again using a bearing.


    I need to calculate the horizontal and vertical force components at the three bearing locations. I believe this is a basic problem but I'm unable to get my head around it. Any help would be really appreciated.


    Thank you!
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    Last edited by Kelly_Bramble; 11-15-2016 at 08:51 PM. Reason: Attach image directly too forum

  2. #2
    Technical Fellow jboggs's Avatar
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    Mar 2011
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    Myrtle Beach, SC
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    908
    Explain how this is not homework please. I think your diagram is incomplete. Based on your description there are no forces. You sure the motion of bearing 2 is not restricted in some way, horizontally or vertically?

  3. #3
    Lead Engineer Cake of Doom's Avatar
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    Aug 2012
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    UK
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    I too call home work shenanigans! This is like a three pin frame exercise we did in week one, day one.

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