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**[SOLVED] Seriously? Moment of Force about a specified Axis**

So I really thought I understood this. I have attached the problem and attempt at solution. It should be easy to follow.

**Problem**

**Attempt at Solution**

This was my process:

1. Write each F and each r as cartesian vectors

2. Find each moment by cross product.

3. Add the moments to get resultant moment M_R. Find unit vector along Oa axis=U_oa

4. Use resultant Moment and Unit vector along Oa to find

M_R dot U_oa=|M_oa|

5. Write as Cartesian vector-->|M_oa|*U_oa

The answer is supposed to be 26.1i-15.1j lb*ft. As you can see, my answer isn't close (WTF else is new!)

What is wrong with my method?

Thanks,

Casey