Mechanics of Materials: Lesson 25 - Angle of Twist Due to Torque, Torsion

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[yaadav]

At Uni idk how our professors get hired. They are absolute amateur and they take weeks to explain whatever we learn from Mr.Hanson 15mins'videos. Thank You Mr.Hanson.

[judemancilla]

I have a solids exam tomorrow morning, so today I've binge watched a hefty sum of your videos. I'm very grateful for these, especially during this difficult time where help is extremely limited. Thank you, Prof. Hanson!

[justinking]

at 17:37 you use 2 pi over 180 to convert when it should be pi on 180. i love your videos, they are incredible! so easy to understand

[kristibester]

As an engineering student in South Africa during a global pandemic, I have had to do a lot of self-learning. These videos have helped me greatly to prepare for my final strength of materials exam. Thank you!

[DaftDriver]

For the last step, should the conversion be 2pi/360 = 1 radian? With that I got the angle of twist of 30.76 degrees

[Ben-mimm]

Professor, these videos are invaluable and I GREATLY appreciate your teaching methods. It's a crying shame that most Professors aren't this good or show that they care as you do. Infinite thanks to you sir.

[alishad]

Angel of twist, ha ha. i really enjoy your lighthearted humor

[zeebaka]

I learned more about this topic in 15 minutes here than in multiple weeks of my structures class, amazing.

[t.e.d.d]

Thank you very much professor, I had problems about the CCW and CW determination, I didn't know that I should apply it first

Also thank you for explaining the topic in solids courses in an easy and fun way.

[faditemeiza]

the angle in degrees is wrong cause it should be 16.66*2= 33.33 degrees
I guess the mistake is 2Phi/180 should be only Phi/180 or 1rad =57.3 degrees and 0.581 *57.3= 33.33 degrees

[maetheresebatusin]

Thank you for this. But will you not minus the angle of twist of CD because its direction is opposite? i hope you can enlighten mi sir!

[jujuu]

Isn't the polar moment of inertia wrong? I thought C is supposed to be the point of interest (ie. in terms of radius)

[efealtun]

how do you decide cw or ccw torsion Mr Hanson? It doesnt work if you want to decide according to internal forces diagram!

[mishaanikanov]

Why do profs who earn 80CAD/hour can't explain the same way?

[Ahmed-Afkir]

Hi Mr Henson,

Maybe it is a mistake but 2pi=360 degree.
So 0.581 rad should be 33.28... degree.

[Josh-rddw]

hello professor, if for example you cut a beam and it says clockwise, does that mean you put the negative sign in the equation (-t in this case)?

[rayinoz]

Thanks for this vidéo. U make it easy for us to understand torsion.

[manuboker]

Wonderful solids lessons!! really taking the time to explain the problems along with a good sense of humor :))

[elliewolcott]

Thank you so much!! I was really struggling with this in class.

[sumikokwok]

Are the signs +/- arbitrary for the torsional shear stress and angle of twist? So we just write what we get mathematically or do we write the absolute value and specify the direction at the end?