Three forces are applied to a body. They are :(adsbygoogle = window.adsbygoogle || []).push({});

F1 = (4,5) applied at (1,2)

F2 = (2,-1) applied at (3,-1)

F3 = (-3, 2) applied at (-2,1)

i) Find the resultant force

Answer : R = (3,6)

ii) Find the total moment about the origin

(This i know how to do)

iii) The line of action of R cuts the Y-axis at (0,d). Find d

iv) Find the equation of this line of action

How do I solve iii) and iv)

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# How do I find the line of action of this resultant force?

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