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Statics force problem - Force required to be a minimum

  • Thread starter Sxq
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  • #1
Sxq
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1. Homework Statement :
If the resultant force acting on the bracket is required to be a minimum, determine the magnitude of F1.


I understand how to solve problems like this, I just don't understand what it means when it says that the force is required to be a minimum. Any help would be great!

http://img40.imageshack.us/img40/8929/staticsproblem.png [Broken]
 
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Answers and Replies

  • #2
nvn
Science Advisor
Homework Helper
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Compute the resultant force. Now try different F1 magnitudes to see if it increases or decreases the resultant force. See if something would minimize the resultant force.
 
  • #3
Sxq
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A friend said that I should take the derivative (of what?), set it to 0, and find the minimum that way. Does that make any sense?
 
  • #4
nvn
Science Advisor
Homework Helper
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That's right, Sxq! Of R, the resultant. R is a function of F1; i.e., R(F1). Give it a try. Hint 1: Don't forget the chain rule. :wink:
 
  • #5
Sxq
3
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Okay thanks!
I got it =p
 

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