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Math Help - Total Moment Forces on a Drum

  1. #1
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    Total Moment Forces on a Drum

    See figure attached.

    I tried to split all the forces and calculate the perpendicular distances from the point E. I did this for the 2 forces in the 2nd and 4th quadrant but I still don't have enough information to determine alpha.

    Any ideas?

    EDIT: Update, I think I managed to solve it by simply expressing the perpendicular distances of the 130N force in terms of alpha.

    Anyone care to check my answer?

    I got a value of 39.1 degrees for alpha.

    Thanks again.
    Attached Thumbnails Attached Thumbnails Total Moment Forces on a Drum-drumquestion.jpg  
    Last edited by jegues; February 3rd 2010 at 05:12 PM.
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  2. #2
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    Bump, still looking for verification.
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