Forces and Vectors in Equilibrium

AI Thread Summary
The discussion revolves around a homework assignment involving a pulley system constructed with straws, string, and paper clips. The student collected data on the number of paper clips and their respective angles but is unsure how to proceed to demonstrate equilibrium. They understand that the sum of forces must equal zero but are confused about how to apply sine and cosine functions to their collected data. The angles measured from the horizontal and the total weights of the paper clips are crucial for calculations. The student seeks guidance on how to correctly place the numbers to achieve equilibrium in their analysis.
geoinerworks
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Homework Statement


So I am at a loss at the moment my brain is not functioning...
Ok so we had to set up a pulley like system with straws, string and paper clips. The assignment was to do this and gather data, they didn't say what data to all gather.. I collected number of paper clips in all three locations Left, Middle, Right and the Angles...

Example... Paper clips... Left 3 Middle 4 Right 4 Each weighing 1g
Angles... from the middle point measured from the horizon line..
Left of center 68deg. Right of center 44deg.


This is where I am stuck... I am lost where to go from here... I know to be in equilibrium I have to come up with 0 but between here and there... I am lost.. I do know I have to use sin and cos but I am lost as to my placement of numbers.. Thank you in advance..
 
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http://www.flickr.com/photos/51438603@N00/sets/72157628674589987/with/6617610035/

Here is the set up...

my example is
Left 3 clips totaling 3g
Middle 4 clips totaling 4g
Right 4 clips totaling 4g

left angle 112deg and the right angle 44deg..

hope this makes more sense...
 
Last edited by a moderator:
Here is my work please take a look and let me know...
http://www.flickr.com/photos/51438603@N00/6623285907/
 
Last edited by a moderator:

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