Find the zero force members in a truss: example #1

This engineering statics tutorial goes over an example of how to find the zero force members in a truss with a certain loading. I missed two ZFMs in this video on the right hand side of the truss. They are the ones where my cursor is at 4:17. By the end of the video, you can see that I should have identified them as ZFMs because otherwise they would throw off the equilibrium at the joint that is on the bottom of the truss about 1/3 of the way from the right hand side. Sorry about that, and thanks to those who pointed it out!!!

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Thanks for watching, I hope it helps!

[orianx]

Why isn't the joint you're point at, at 4:17 a zero force member? There are two collinear forces meeting said member.

[collegeguy]

none of my proffs have been able to explain the zero member force concept so clearly like you! Thank you for taking time to explain with examples in a clear, coherent way!

[philsmitherson]

I was about to comment but read the description haha. I was really confused for a while though so I came from your website to see if anyone commented on Youtube. if you add an annotation I think it will help people who don't know it's wrong. Great videos though, they helped a lot and I finally understand it!

[散华-lm]

Cool ! I have watched the previous 2-3 videos about trusses, and then I can handle the question in this video on my own

[gregwarner]

I would say the vertical members are there to limit the length of the beams supporting the longinitudal beams of the roadway. Other uses of 'zero force's members to provide adequate stiffness for compression members that may be longer than 40 times their thickness.

[altontorres]

at 6:26 i dont get why its zero force memebr but on your next video with two forces its just on the opposite side and it counts as a force member? what am i missing?

[niranjanwagh]

What two zero force members you missed? I only recognized the one at 4:17 . Which one is second?

[mohammedlasmi]

Members zero force. It means that we can remove this members from trusts? Lose of materials. Thanks

[timyassa]

at 7:20, why isn't the member that goes from the very top of the truss system to the bottom right now a zero force member?

[anematix]

I'm so confused, how come at 3:51 that force would have a perpendicular component causing it to be a 0 force member. Why would it have to have a perpendicular component??? :(

[irfanmehmood]

Won't there be one more zero force member in this example? Kindly Reply and please upload videos of Dynamics also?

[shivbratyadav]

i think there is one more 0 force member