Statics: Exam 1 Review Problem 3, 3D Statics on a Particle

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[@saxonfaurie1626]

The hour was late, all hope seemed lost. Then I saw him in his full glory, Dr. Hanson. Here to save yet another test, thank you sir.

[@georgesadler7830]

Professor Hanson, thank you for a beautiful explanation and analysis of 3D Statics on a Particle. This review problem was time consuming, however, I really understand it for start to finish.

[@Physicist999]

It was a good coincidence that I put the same distance before solving it as you did for hanging weigth.(I stop the videos and solve. Then check for the solution)

[@gamerpage6862]

Thank you sir. You truly are a lifesaver. God bless you

[@gavinliu9710]

the T'AE is also a 2D problem in YZ plane like you taught before in Lesson 19. Thank you sir.

[@Peter_1986]

I got a bunch of negative tensions on my first try, and then I realised that I had put the weight as a z-coordinate. xP

[@nitadityachaudhary8776]

love your videos and really appreciate the help, but i don’t understand why the vector w is not -8000j cuz its magnitude is 800lbs and lambda hat is -10j, isnt 800 x -10j = -8000j?

[@kevinxu810]

no because all of the lambda directions were done with respect to point A already instead of the origin

[@harshab6110]

Shouldn't the co-ordinates of D be D(-1,0,4)? because X = -1 at point D?

[@SoftballBud152]

Wouldn't the coordinates of point c be ?

[@waynethurman2144]

I think you may be right; something seems wrong and this stuff is hard enough as it is!

[@kingbranden1369]

I thought the problem was impossible. Then I got the missing measurement at 4:40

[@karisc.anoruo2212]

Good afternoon sir, I'm not sure how you typed this into your calculator. I used the matrix method, (Fx is row 1, Fy is row 2, Fz is row 3) and used rref() on that matrix and I didn't get the right answer. So I used systems of equations solver with the same rows and still got the same wrong answer. Please how do I use the calculator so solve this? Thank you so much for your help.

[@comicalastranomical2780]

Does anybody know where the equivalent system solver on TI-84 plus CE is and how to find? thank you for all your help, Dr. Hanson!!!!!!!!!!!!!!!!!!!

[@yousefnoori]

Click on apps, click on PlySmlt2 (default is 9), and then on SIMILTANOUS SYSTEM SOLVER, you should be able to select the options and everything afterwards :)

[@labeebal-juneidi5332]

matrix

[@ryanisaacson118]

no flash

[@christiancarlson227]

shouldnt it be -8,000j not 800

[@Fahimsy3d]

no

[@eduardosdelarosa5539]

Looooooooooooooong