Engineering Mechanics: Statics Lecture 10 | Moments in 3D (Cross Product)

[@bobym6233]

appreciate the content Clayton. less serious with a pinge of humor with uncompromised quality content!! this is gold. thank you!!

[@DeepakWoli-pr3tp]

Incredibly helpful.

[@meryemkanay7155]

Simple and comprehensive.

[@AwaisAwais-zl4uf]

Hey Clayton, at 15:21 you said that student always forget negative sign. can we write it like (AzBx-AxBz)j and put positive sign in front of it so it will be i+j+k, rather than i-j+k. I think we are getting negative sign in front of j component because we mess up the order. it was supposed to be AzBx(k*i=j) - AxBz(i*k=-j)= (AzBx-AxBz)j

[@AwaisAwais-zl4uf]

but i guess it will not work well with the fish method. But if we want to keep positive sign in all of the components we will have to draw the fish in opposite direction for J component.

[@ClaytonPettit]

Ya as you will see everyone has a different way of conducting cross product haha this is my way and the formula shown is what was given in previous formula sheets. If your prefer that way with all positives it is completely valid :) always do what works best for you :)

[@rayyanislam6402]

Hi Clayton, did you take the example videos down?

[@medicisounds1384]

For the moments in component form could you not just find the magnitude and then multiply it by the magnitude of the force? instead of doing the matrix

[@potatoesarelyfe4706]

Can you go over how you use the fish method for 3 variables? Thanks!

[@silverlyder]

Thanks

[@medicisounds1384]

Cross product seems so complicated