SA05: Truss Analysis: Zero-force Members

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1. HMM I have question is Zero-force member existence only
   structural turss????
2. the problem (A), the zero-force members are : BF,BE, EF, EC, ED AND IH,HJ,JG,HG,DH
   the problem (B), BF,BE, EF, EC, ED AND IH,HJ,JG,HG,DH
   THE PROBLEM (c) HG,GF,FE,DE,DC,BC
   
   DR. THAT VIDEO IS AWESOME, i HAVE READ MY BOOK A LOT A LOT OF TIMES "HOW TO DETERMINE THE ZERO FORCE MEMBERS", BUT I STILL NOT BE ABLE TO INDICATE THE ZERO-FORCE MEMBERS. ENGLISH IS MY SECOND LANGUAGE BUT JUST AFTER THREE TIME HEAR YOUR EXPLANATION. I FEEL MORE CONFIDENT TO SOLVE THAT PROBLEM.
3. Answers are :number one is only left with triangle ADK, number two os left with the right side plus beam ADF, and number 3 is left with angle AIB. credits to craig evangelista
4. why member AF is not eliminated using the third rule at 6:13?we have two forces Ax and AB colinear
5. thanks for the video and the explanations on comments!!
6. Great explanation....so are the answers to the last three problems anywhere?
7. Hi +Dr Structure what are the answers in (A)?
8. Muito bom!!
   Excellent videos
9. This was really helpful! Thank you!
10. so im thinking number one is only left with triangle ADK, number two os left with the right side plus beam ADF, and number 3 is left with angle AIB.
    am i right?
11. sir suppose if two 3 membered joint has common non-collinear member and an external force is applied at one joint and at other joint is no force applied ,then what about that member ? as in the sense of no force joint that non-collinear member is zero force member but it is contradict in the sense of force applied joint
12. On problem (B), I am finding that the only members that ARE NOT zero force members are members IG, HG, and JG. Is this correct, or have I inappropriately used the rules somehow?
13. Beautifully explained! :)
14. very good explaination of zero force member.
    please upload the answer to the questions
15. AT 5:36 HOW RULE 3 IS APPLIED AT "EF" AND "GA"???...............PLZ EXPLAIN IT
16. IN THE EXAMPLE GIVEN IN FIRST RULE ............ IS "CE" MEMBER ZERO FORCE MEMBER???.........IF NOT THEN PLEASE EXPLAIN IT......
17. Really a nice tutorial package , That having awsome presentation, relavent example. I have downloaded all of these videos.
    Thanks Dr. Structure for these tutorials .
18. If truss joint is not carrying any loads and not supported a pin or roller...but according to rule 2 you gave simple example of pin and roller supported joint..so why this members are zero????? means why AB is zero??
19. In question (A), why are DF and DG zero force members when there is a force being applied at D?
20. Dang, you put alot of work into the production here!