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Homework Help: Scalar Moment around a point due to a force

  1. Jul 6, 2017 #1
    1. The problem statement, all variables and given/known data
    In two dimensions, the moment of a force can be calculated using the scalar method, MO=Fd, where F is the magnitude of the force and d is the perpendicular distance from the line of force to the point where the moment is being considered.

    Using the scalar method, calculate the moment about O due to F.

    2. Relevant equations


    r = 2.50 ft and F has magnitude F = 580 lb.

    3. The attempt at a solution

    I've calculated the x and y components of the force, each being 410 lb, due to the angle being 45
    Also using the angles I calculated the x and y distances being 1.77 and then 1.77 + 2.5?

    I do the f*d multiplied and added up for 1.77*410*2 and it's wrong
    I then divided that by 2, and it was wrong.
    I then did the (2.55+1.77*410)+(1.77*410) and it says that's wrong too.

    What am I doing wrong?
  2. jcsd
  3. Jul 6, 2017 #2
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