Mechanics, Year One, Forces and perpendicular vectors

AI Thread Summary
The discussion centers on a complex homework problem from a mechanics course, specifically problem #2-116. Participants express confusion over the solution provided, particularly regarding the meaning of the variables "r" and "bold r." Clarification is sought on the distinction between these two variables. One suggestion is to revisit foundational concepts from Chapter 1 to better understand the problem. Overall, the thread highlights the need for clearer explanations of vector notation in physics problems.
TalibanNinja
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Homework Statement


this website has the question listed as #2-116. the solution shown is extremely complicated and i ask thet someone please help.

http://www.scribd.com/doc/48470460/113/Problem-2-116

Homework Equations


The Attempt at a Solution

 
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I am confused as to what you want. The pages you post have a detailed solution.
 
i don't understand what the "r" represents.
 
TalibanNinja said:
i don't understand what the "r" represents.

There are two "r", bold "r" and normal "r".
 
could you explain what bold r means, and what r means
 
TalibanNinja said:
could you explain what bold r means, and what r means

I think you should start from Chapter #1.
 

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