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Statics: Lesson 25 - Moment About a Specified Axis
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- čas přidán 12. 06. 2020
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You are the reason I still have faith in passing mechanics, keep going🖤
you prolly dont give a shit but does anybody know a way to get back into an instagram account??
I was stupid forgot my login password. I would appreciate any tricks you can give me
@Larry Jaxon instablaster ;)
Love your clap transition. It makes learning this more entertaining!
Unreal set of videos, they helped me so much, you explain things so well...Keep em coming!!
Thank you doc! for making all your lecture fun ! I super like your teaching style, what i give to have you as a prof.! Stay safe Doc. Hanson
9:03 Caught me so off guard but had me dying 😂😂😂
I was dead🤣🤣🤣
"speaking of whacky see you next time" got me down the best statics teacher I ever had
239 beans in a can cause one more is two-farty! LOL
Since the moment we're looking for is a dot product, shouldn't it be a scalar and not a vector? Mainly judging from the arrow above the "M" in the top left corner. I get the idea now though, thanks!
Excellent video!
You saved my life, thanks 💙💙💙
Awesome video thanks 🙏🏻
THANK YOU!! Life saver
you´re awesome, thaks for the video
Thank you very much ... You've lifted a great burden on me... I now understand the concept.
You're the best of all time
Extremely helpful content!! One question, how would we find that same moment about the wacky axis in Cartesian form?
Multiply the scalar moment you got about the wacky axis by the unit vector of the wacky axis
Hi Jeff, Can you show me methods to convert a moment rotating about an X axis to another W axis (W axis sides with X axis an angle of alpha)?
Keep it up Daddy. Learning from you smart ways of solving problems
Thank you
#coolest teacher
👍👍
What if you have multiple forces and you wish to find the moment of those multiple forces about that axis?
how to know which point to choose for lamda?
Bro is the best.
👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻the GOAT
Does r has to be at the end points of the axis?
How to determine direction of the moment?
Great video! It doesnt seem to me that it should matter whether you find the axis at the end as OB or BO, but it doesnt change the sign of your final answer to positive, why is that?
our O in this case is 0 so subtracting or adding it in this doesn't matter since O is at origin. I think it'd change the sign if O was on another point
God bless u
Your videos are amazing Dr. Hanson. Thank you for teaching me 3 months of statics in 7 days. In this video, I believe you made a minor mistake when calculating J in the matrix. You mistakenly took i for j but then corrected it later and forgot to correct the signs as i is negative and j is positive. So it's (0x10) - (6x-40) = +240 as j is positive. Just thought I'd clear that out for those who are watching this video. Thank you Dr. Hanson
nope -240 is the correct one
@@suleyman7478 how?
Right, 240 is definitely the right answer! 100% sure! Then the moment is equal to 264 N.m
Test Yourself 3.4 #2 in the How To Ace Statics unbook is driving me crazy. Where does r = 3k??
you transported a little when you did the dimension editing😂
Thank you sir
r vector = -3i+4j+6k ??
There comes a minor mistake. The formula you wrote in 0:52 should be Scalar M because a vector dots a vector should be a scale. Btw, thank you for your videos. They help me a lot.
Good catch. The teacher should have written (dot lambda) on "both sides" of that equation.
Why Lambda OB and not BO?
Use the right hand rule to determine which direction is positive.
how do you determine the signs in cross multiplying vectors ?
sequence of +i-j+k
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I wish you were my prof!
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🥰
A moment about a wacky axe represent a volume, so how the volume is negative then?!! So, the error is in -240, it's not. It's +240. Check that out!
isn't the r=-3i+4j+6k ???
yes, you are correct. because we are using a specified axis or (wacky axis which is what he calls it), you can choose any point on that axis. both of you will get the same final answer.
It is, but from o.. he took r from b
Please is there text book u can help me for this
Please check the description of the video. I wrote one just for you!
@@1234jhanson ok thanks very much
10:01
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1:31 😂
Cc❤❤❤
Professor Hanson, this is an awesome lecture on Moment About a Specified Axis, however the 240 should be a plus 240 instead of minus and this would change your answer to 262 newton meter.
No George he is right with the -240. When you cross vectors your j component has an extra negative. a x b = (discriminate )i - (discriminate)j + (discriminate)k. For his j component, he got [ (0*10) - (-40 * 6) ] = 0 - (-240) = +240. Then you multiply by the -j to get -240j.
نشاهد بالانجليزي وخلاص
cause if theres one more theyll be 240🤣🤣🤣🤣🤣