Determine the moment of this force about point A and B

The pipe assembly is subjected to the 80-N force.
Determine the moment of this force about point A.

The pipe assembly is subjected to the 80-N force.

[dpowers]

I don't comment on many videos but I had to tell you that you are a God send. I just bombed a statics exam today and I'm going to be glued to your channel for the semester to really learn this stuff. It is not easy for me.

[michaelmartinez]

I wasn't able to tell that the line splitting the 30 and 40 degree triangle was in the x and y direction. I thought it was just the y component of the force. Thank you for showing me this. It saved me from making a mistake on my "Final Answer"// You are Fantastic teacher

[lasalleman]

Shouldn't the cross product be : {-26.62; 30.9; 11.405}?

[Yu-ChingLee]

Thank you so much!!! You help me to figure out so many statics problems.

[mohamadalzaim]

You are very helpful and humble I hope you were my professor

[ChristopherAnderson-wv]

why do we HAVE to find the vector from AC? & BC? why couldnt we use AB or BA?

[matthewsutliff]

Everything on a is correct except the final "i" value; it's multiplied by negative .2 (-.2) and the negative was covered by the lines so the "i" value is -5.38i

[ChrisGkay]

If the Y component is the hypothenuse of the 40 degree triangle, how can the Y component be smaller then the (x, y) projection side.

[hamadfahad]

you put
x as 0.55
y as 0
z as -0.2

why you put y as 0, it is 0.4