6-3 Determine the force in members of the truss (state tension or compression for each member).
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- čas přidán 1. 12. 2019
- Determine the force in each member of the truss.
State if the members are in tension or compression.
My email: TheengineeringWei@gmail.com
Book: Engineering Mechanics Statics 14th Edition
Author: Russell.C. Hibbeler
ISBN-13: 978-0133918922
Email me if you want:
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Force DF should be under tension, not compression like you wrote
Can I ask why didn't you use the equations of equilibrium? With those equations you are able to use previously taught concepts throughout the Hibbler textbook and continue to build off of each other. I'm just trying to understand your perspective/thought process on why you decided to approach this problem this way. Thank you for taking the time to work through this problem.
- Angel Vargas
Awesome vid, really helped me understand working with trusses
Around 3 minutes in when solving AB, why was 130*(5/13) positive. Because of the way the 130 lb force is pointing, shouldn't it be negative?
Because the force being applied has a negative value. Either way positive and negative really dont matter in your FBD's so long as you keep your positive and negative values consistent with up down left and right
what is that 120lb in 1:26
7:02 I still dont get why 150 x 3/5 multiplied by two
I'm sure you know by now lol, but there are two diagonals acting on point C so each diagonal has an x component acting on C. In this case each x component happen to be the same since they each have the same magnitude and triangle. So if you add up each x component (or multiply one of them by 2) you get 180.
Compression is (-) and tension is (+).
How to figure out the direction of forces? I am kind of Confused.
I think I explained clearly in the video, if you have a specific question or a certain part of the video is confusing for you, please provide the time frame or detailed questions.
i think you really just have to imagine which direction a force should be so it can achieve equilibrium
@@TheEngineeringWei It actually wasn't explained clearly in the video personally. Howcome the direction of Fac changes from Joint A to Joint C? Went from pointing to Joint A to pointing to Joint C
@@TheEngineeringWei You typed all that out but you coulda just answered his question dawg
@@DynamicHasan100 He just wanted to know what part of the video to explain so he doesn't just restate the whole video in a comment...