Statics: Exam 1 Review Problem 1, 3D Vector Addition

[@Belnivista_edt]

Please live forever!! You make it easier with every video im watching. Never have i ever understood it clearer. I couldve aced my exams 20years ago!!

[@georgesadler7830]

Professor Hanson, these review session are very helpful for understanding the material in full detail. These problems are not difficult.

[@kingbranden1369]

This review was tough for me, but I actually gained new insight into the functions because of it. Only now do I really understand where the directional cosine formulas come from and how the coordinate method words. I still managed to mess up vector 2. I got the values right but messed up the order and the sign.

[@waynethurman2144]

Tremendous video: I feel so inadequate!

[@jcnot9712]

How can the angle between the y and z axes be 105 degrees for F2? They're supposed to be perpendicular axes with an angle of 90 degrees between them.

[@justinpratt2545]

Will my professor specify sig figs and rounding? (Those who are in or have taken statics)

[@ahmad_obisat]

shouldnt Ox= from +X axis to F vector which is 90 (between x and y) +60 = 135 ?

[@justinpratt2545]

cos 135 is -.707

[@naberyoutube2802]

I used the first method to find F2. I did the squareroot=F2 and it was 180 as well but the components were different. What's that about?

[@kylejohnson8447]

if you used 150 as the swing angle like me, that is incorrect. i dont think the 1st method can be used on F2 because we do not have the swing angle

[@timilehinafolabi1757]

Please reduce the intro scene volume it too loud🙏🙏

[@carsonleischner5884]

Someone’s got some Jonny weak sauce in em

[@FTW56]

@@carsonleischner5884 lmao

[@anthonypicciano7313]

I'm pretty sure the equation for F1 is incorrect. Isnt this similar to spherical coordinate where, x=(F or rho)*cos(theta)*sin(phi)?

[@alfredbaku618]

PLease you used the wrong equations in calculating f1

[@emirhanuncel]

Maybe you were confused in the part the teacher write -60 degree. Actually this sinus is cosine of 30.