Statics: Lesson 69 - Moment of Inertia, Composite Shape Method

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[chikanmao]

Thanks for carrying me through.. glad i wont have to do this after today...you helped me cross the finish line

[Oscar-gxyf]

You are the patron saint of statics thank you Jeff

[georgesadler]

DR. Hanson, thank you for another awesome lecture on the Moments of Inertia and the Composite shape method. These topics are a combination of Physics and Statics.

[quinnrison]

Just want to mention the correct answer is 469.366 in^4. I say this because Jeff accidentally wrote down -36.63 in^4 despite saying -38.63in^4. Other than that amazing video thanks jeff

[josuealvarez]

It's Saturday Dec 11, 2021, 5:24pm, I've been working on the same statics problem for 2 hours. I don't know what's wrong. I come to youtube and I find you, Mr. Hanson. Thanks!! Just Thanks!

[LouieOConnell-ihix]

Amazing explanations Jeff! Very much appreciated.

[gail]

These videos are quite informative and really helped me understand the topics. I passed my last test thanks to you!!

[thomasschenk]

You make this fun Jeff. You are my slime. Many thanks!

[richardle]

Thank god I found this man before my exams god blesses

[CB-mhdq]

You are the reason im about to pass my final. A true God-send

[anthonyconte]

The moment of inertia for the cirlce in the second line should be 38.63 not 36.63. Dr.H says its 38.63 but writes down 36.63

the final answer should be 469.37 in ^4 if you round those totals to 2 decimals.

[claudiaromero]

Great professor. I understood it completely !!!

[hannahrebeccaevelopez]

Thank you so much Sir! May GOD BLESS YOU MORE 😇 💕 you're such a great teacher😊
If I were your child/student though I'm not I'm so very very proud of you😊😇

[OneOneThree-wlml]

Wow you really saved the day haha. This makes so much sense. You have a gift!

[SIASOUKHTEH]

thank you. what about the moment of inertia at left edge?

[ytniadachiii]

is there a way i can have the same book?

i really love this channel!

[aquaflames]

The Iy'=Iy+Ad^2 is the parallel axis theorem, right? For my professor, the Iy is on left and Iy' is on the right with the formula as Iy=Iy'+Adx^2. Which is right? Thanks so much for these videos! They're super easy to follow and comprehend. Thanks again!

[a_ditto]

Hey jeff!
Love the video, however i believe you have made a mistake near the end with the equation for the triangle. When completing your calculations you set up the formula for the rectangle so that you could swap base and height - you did this correctly when putting in the values to your formula.
However, you did not swap the formula for the triangle yet you still switched the base and height values which i believe is incorrect?
If I'm wrong please feel free to explain this to me as i'd love to know!

[terrancepage]

im confused on the last part. For the triangle equation, should the base be 3" and the height be 6" ? it seems Dr. Hanson had the opposite

[zozotto]

Im confused as to why you calculated x bar when the question is about y