1.1.3 Triple Products

[@liamolivar328]

im trying to understand vectors but all this video made me feel like is that you sped through writing the vectors down and i didnt even understand the parallelogram thing

[@jg394]

Sure, no problem. Let me know what I can do better or if you have questions.

[@sangitpradhan6818]

loved your voice man!

[@everythingfun7069]

you are great man, iwas facing problems in phy. though i luv physics a lot,,, ur videos helped me

[@jg394]

I hope you learn proper English too. There's nothing worse than having a good idea discounted by bad grammar.

[@mohamedIbrahim-ci9sn]

@@jg394 damn

[@trexinvert]

At 1:30 you are "incorrect". The first operation (B x C) yields another vector call it D. An orthogonal vector with components . Then this vector D is combined with vector A using a "dot product operation". This then yields a scalar value. Vector A is not a result of BxC as you mention. Vector A is a given vector, which is then "projected" on to the vector D. Since, D is orthogonal to B x C, it then becomes the 3rd dimension to create the volume. You skipped a step, and I think you know that, now.

[@jg394]

I’ll take a look

[@trexinvert]

Thx.
In mech engr, we often use the scalar triple product to find a moment about an axis.
Some engineering students are so busy grinding out the answer that they may not be aware of the vector math operation. It's quite simple actually, but easy to confuse under stress.
The order of operation is [axis vector] "dot prod" [ moment arm vector ] "cross prod" [force vector].
First, the cross product is performed resulting in a vector.
Then, the resulting vector is "projected" onto the axis vector using the dot product.
The final result is scalar, ofcourse.

[@lord_black2228]

@@jg394 have u taken a look yet?

[@njk7146]

kinda lost it after part ii

[@anarsultani7869]

I have one question , isn't outer product of 3 vectors returns a cube? You mentioned it as parallelepiped. Thanks in advance

[@gamerboyss5310]

not in every case

[@clam_series]

Thanks man

[@eddiexyx2]

Is there any a level modules I should read before reading griffins book cause I finding it hard to to follow and why this works (just started A level taking math,futhermath physics n Chem). Am I already supposed to know some of this stuff.

[@_mark_3814]

huh? are you sure you understand this.

[@LucasLupifieri]

Thank you for your videos, they helped me a lot ;)

[@jimdogma1537]

Oh boy, I'm getting a little worried. This series was great up until this video. I didn't get any of that presentation. This is what I call the "thinking out loud" approach to teaching which is almost always ineffective. I'm still holding out promise, though and hopefully this was just an anomaly. Will keep you posted.

[@alvinku9903]

Usless

[@jg394]

Yep, I'm not too happy with the quality.

[@gamerboyss5310]

@@jg394 lol