Statics: Lesson 20 - 3 Equations and Unknowns, 3D Vectors

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[jeffaragon]

I was so stressed the first 3:10 of this video. Was genuinely intrigued as to how he was going to solve this without coordinates.

[TheodoreDorado]

Jeff Hanson, you are a consummate, artisan craftsman of mathematics with statics as your well-refined medium. I thank you.

[jamesmmachell]

"You can do the algebra, but you can also poke yourself in the eye" haha Dr. Hanson these are amazing lectures.

[ryanisaacson]

enjoy the snap should have done it on the last video also

[leqaahassan]

Thank you dear for your efforts with those amazing and helpful videos in your YouTube Chanel, go ahead and please keep doing.

[Abcdefg.]

@0:58 Hi Dr.Hanson, I am a bit confused, you said that 600 N weight would be in the K hat direction, which is Z axis. But when collecting forces, you put W=600 N in the J direction. Could you please clarify this moment..????

[georgesadler]

Professor Hanson, thank you for another amazing lecture. Writing the correct coordinates worries me a bit.

[Man_De]

For those of you with the textbook, this problem is all ass backwards because the XY&Z axis are all flipped.

[roxanashahriari]

Hi Dr Hanson! thank you for the amazing videos! the axis system is different in book tho im looking at page 66 on your book the x axis is coming towards us, the y axis is horizontal and the z axis is vertical. I'm confused

[tommygstonymec]

I am stuck at the calculator part, how do we do it algebraically ???

[slirac]

Is that supposed to be cos45i instead of sin45i?

[Robbie-Robb]

I believe there is an error regarding the cos 45°. It should be negative. Yeah??

[emiliovelasco]

how do you solve the equations with the calculator? I couldn't figure it out that part.

[garrettgeffre]

How do you solve this without a calculator, specifically just the matrix part.

[G.Davis]

How can I use this method to solve a problem where I'm given the tension in a cable and need to find the weight of the object pulling on the cables? Thank you!

[ikennao]

please do it the exact same way, you throw us off, what are the 3 points for TDC

[masoudmoslemi]

Sir, with all du respect it seems there are some errors in calculating Tdb . Please double check (-3*-= 3i hat)

[calvinbesse]

I fuckin love you jeff you the fuckin man thanks for saving my Statics grade!! (and helping with calc 3 too)

[ikennao]

im so frustrated, you should have done TDC the normal way, i don't know how you magically used the sine and cosine