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1. Homework Statement
See attachment, Im getting everyone of these problems wrong.
2. Homework 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
See attachment, Im getting everyone of these problems wrong.
2. Homework 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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