Changing A,B,C and D Beams to Chain for Perfect System Performance

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Homework Help Overview

The discussion revolves around a mechanical system involving four beams labeled A, B, C, and D, and the possibility of replacing one or more of these beams with a chain while maintaining system performance. The participants are exploring the implications of such a change in the context of mechanical design and structural integrity.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants are considering which beam could be replaced by a chain, with some suggesting beam C based on perceived importance. Questions are raised about the conditions under which a beam can be replaced by a chain, specifically regarding tension and compression forces.

Discussion Status

The discussion is ongoing, with various opinions on which beam to replace and the reasoning behind those choices. Some participants have offered insights into the mechanical properties of beams and chains, while others are questioning the assumptions about the system's configuration and the implications of such a replacement.

Contextual Notes

There are uncertainties regarding whether the beams are hinged or rigidly jointed, which may affect the analysis. Additionally, the participants express a lack of knowledge about mechanical design, which may influence their reasoning and conclusions.

zizodev
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Homework Statement



http://data.imagup.com/10/1146211599.jpg

A,B,C and D are 4 beams ..what beam we can change it to chain and this system till stay work perfectly?
 
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hi zizodev! :wink:

tell us what you think, and then we'll comment! :smile:

(and are the beams hinged, or rigidly jointed?)
 


emm..i think rigidly jointed and for me the changeable one is C..isn't..let me know the 2 case (for the beams hinged and rigidly jointed)
thank you tiny-tim in advance.:)
 
hi zizodev! :smile:
zizodev said:
..what beam we can change it to chain and this system till stay work perfectly?
zizodev said:
… for me the changeable one is C..

give a reason! :rolleyes:

(when can you replace a beam by a chain? :wink:)
 


i have chosen C because i felt that this is less important ! and i haven't no idea about mechanical design. about mechanical strengths etc...
 
tiny-tim said:
(when can you replace a beam by a chain? :wink:)

a beam can have either tension or compression

a chain can only have tension

(you can't push a chain, can you? :biggrin:)

so a chain can only replace a beam in tension

so you'll need to prove: which beams are in tension? :smile:
 


the B are in tension i think..:)
 
yes, but the difficulty is that if you replace B by a chain, what is there to stop A falling? :wink:
 


hahah...so the final answer will be C ...thnks again tiny-tim
 

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