1. Sep 16, 2012 #1

   Mushroom79

   

   1. The problem statement, all variables and given/known data
   
   Friction=0.8
   r=50 m
   T=?
   
   2. Relevant equations
   
   T=distance/speed
   
   Perimeter=2*pi*r
   
   Fc=(mv^2)/r
   
   Ffriction=m*g*friction
   
   3. The attempt at a solution
   
   Perimeter
   2*3.14*50=314
   
   Fc=Ffriction
   
   (mv^2)/r=m*g*friction
   
   v=r*g*friction
   
   = 50*9.82*0.8=391.8
   
   T=314/391.8 = 0.8 s
   
   Is this correct? Seems a bit wrong to me :S

    

   Last edited: Sep 16, 2012

   Mushroom79, Sep 16, 2012
2. 
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3. Sep 16, 2012 #2

   andrien

   

   forgot to take the square root of velocity.

    

   andrien, Sep 16, 2012
4. Sep 16, 2012 #3

   Mushroom79

   

   Ah! That gives me almost 16 sec, which makes more sense
   
   Thank you!

    

   Mushroom79, Sep 16, 2012

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