Mechanics of Materials: Lesson 37 - What the Heck is Q? Example Problem
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- čas přidán 22. 10. 2022
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You just totally solved all my problems and confusions about Q!!! Thank you very much!!
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At Qb isent there missing area from neutral axis down on the flange?
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Would q be zero if the neutral axis was considered the point of interest?
at 7:06 shouldn't it be 1250/12 instead of 1350/12? resulting in 104.167 instead of 112.5?
Its fine as it, because 1250000 + 100000 is equal to 1350000
Goated
What the heck is q is the most valid question ever asked
How the hell did he work out the distance between the top shape centroid to the neutral axis. I dont understand how it is 18.75
From the neutral axis of the whole part to the very top of the part was 37.5 mm. So the centroid of that area must be in the middle of the 37.5 which (divide by 2) is 18.75mm. Hope this helps
ı still cant understand when writing y from the Q of the upper part you write from the outer to centroid of the piece part. But when writing the bottom Q you write y from the centroid of the piece part to neutural axis . I dont get itttt where are we going the write y from ? Is my question clear, understandable ?
If i understand your question, that is not what he did for the upper part. The y is always going to be the distance from the shape's centroid to the neutral axis, whether the point of interest is above or below the neutral axis.
@@katiemaletta45 ooh okay I understand now thank you !!
@@sevgipnar5261 sevgi yani gerçek Q , QA olara hesapladığımız 140 olan değilmi
gerek kalmadı sağol sevgi bende anladım.
@@Made_by_profs tamamdır bende şimdi açıklamaya çalışacaktım 😅
Q is moment using area but not force to find because it is very hard to measure the force in real life but very easy to measure the area.