Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
How do you determine deflection?
When finding the deflection of a beam at ANY point, on a beam supported at both ends, with a distributed load, we summed moments about THE point to one side of the beam or the other and included the reactions in our calculations.
I was looking at another student's solution from another class for a cantilevered beam, one support, with a distributed load and the reactions were not included. Is this right?
1 Answer
- Adam DLv 710 years agoFavorite Answer
It depends which side of the point the student summed the moments about. If they chose the free end, then there is no reaction. When you sum the moments about a single point on a beam, you're finding the internal moment of the beam at that point - imagine if you cut the beam at that location, and threw away one half of it and replaced it with a moment and a shear.
For a cantilevered beam, the way your classmate did the problem is the fastest solution for that point - he/she didn't need the reactions.
