How to solve 3D statics problems

This engineering statics tutorial goes over how to solve 3D statics problems. The cross product is your friend.

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Looking for more statics tutorials? Check out all of the videos that I made:

Looking for practice problems with solutions? I also created a whole set of fully solved statics problems with step-by-step hand calculations:

Looking for software? I highly recommend checking out SkyCiv. They make a full suite of online structural analysis software and tools that are useful for both students and professionals, including calculators for beams, trusses, frames, moment of inertia and more. It’s great for checking your work:

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Thanks for watching, I hope it helps!

[barnabastoth]

I want you to know that I was pretty sure I was going to fail a quiz. I watched this video at the last moment and ran to class. Now that it is over think I got everything right. Thank you so much!

[willsnyder]

I wish you would go through how you calculate the moments for x y and z directions because that is the most difficult part

[bedircankara]

That's actually very helpful thanks a lot

[madeleineburrows]

How do you calculate the moment about a point that is not at A or the origin? Do you consider the moment(s) caused due to the reaction forces at A?

[Yavanist]

So helpedful, but I'm finding hard how to get a moment

[khoi]

hey im a sophmore, should i try for an engineering career in college or something else? what is your opinions?

[danielniels]

sir i want to ask.
why is torque: M = r x F?
what if i did : M = F x r ?

as i tried before, it gave negative result. does it matter at the final result?

[johnjulius]

How can you determine the moment by using inspection approach, please help me

[bilalmushtq]

please tell me something easier than this method....