(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I've attached an image. The question states:

Replace the three forces shown, with an equivalent force-couple system at point O(origin).

I've got a little ways, but I am stuck at the couple. I don't know how to use the distance in the couple. Need to know what distance to use, and from where.

2. Relevant equations

R = Fx + Fy

C = Mo = ra/o x Fa + rb/o x Fb + rc/o x Fc(is this correct, or do I use x and y?)---this is the part where I'm stuck.

magnitude C = sqrt(Cx^2 + Cy^2)

3. The attempt at a solution

Fx = 200cos60 + 300cos45 + 250cos30 = 528.6 i

Fy = 200sin60 + 300sin45 - 250sin30 = 260.3 j

R = 528.6 i + 260.3 j

C = Mo = ???

Am I correct up to this point too?

View attachment sample exam1.bmp

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# Homework Help: Replace forces with couple

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