Determine the moment of this force about point O

The 20-N horizontal force acts on the handle of the
socket wrench. Determine the moment of this force about
point O. Specify the coordinate direction angles a, b, g of

[mrunknown]

5. Determine the magnitude of the horizontal force F = -Fi acting on the handle of the wrench so that
this force produces a component of the moment along the OA axis (z axis) of the pipe assembly of
𝑀𝑍 = {4𝑘} 𝑁 ∙ 𝑚. Both the wrench and the pipe assembly, OABC, lie in the y-z plane. Suggestion:
Use a scalar analysis.

[alexandresutherland]

Good video, but please turn your microphone up on future videos.

[ryanberardelli]

Thanks! This was very helpful in my understanding of the problem.

[lloydbenablo]

This is the same as my quiz but the difference is that it asks on the moment caused by the x-component of F1 about O. How do i do that? I skipped that part in my quiz since i dont know either

[juniorjay]

but the question doesn't say that the force creates a right angle

[nourdarwish]

I think there is a mistake in your answer; because you forgot to put a negative sign with (0.5 i), the answer is:
Mo= - 0.5 i +0.865 j - 3.56 k
Thank you a lot for your efforts 💚