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

See attachment, Im getting everyone of these problems wrong.

2. Relevant equations

[tex]M_y = u_y(r_y X F)[/tex]

Where u=unit vector defining the direction of y axis

r=distance from y axis to any point on the line of action of F

F=acting force

3. The attempt at a solution

I think im going wrong right from the beginning, how do I show the 100N force is cartesian form? What im doing is :

A=1.2i+0j+0k

B=0.6i+0.6j+1.2k

[tex]

AB =\frac{ -0.6i+0.6j+1.2k}{\sqrt{0.6^2+0.6^2+1.2^2}}

[/tex]

[tex]

F_{AB} = (100N)\frac{ -0.6i+0.6j+1.2k}{\sqrt{0.6^2+0.6^2+1.2^2}}

[/tex]

Im not going to bother to post the rest since im pretty sure this isnt how to do this.

Thanks

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# How do I show the 100N force is cartesian form?

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