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Homework Help: Proving Centripetal Force

  1. Feb 15, 2010 #1
    Hi there, sorry if this is not in the right section, but i have to do an investigation, i have chosen to prove f=mrw2. I will be using a rotational air table, and this the handheld whirly string and mass experiemnt - sorry to be vague. basically i am not the best physicist so i would very much appreciate if anyone could tell me what variable to change, and the consequent desired effect in my endevour to prove the equation. I am confused. Thanks
     
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  3. Mar 2, 2010 #2
    Can somebody please tell me how i can prove f=mrw? i have rotational air table and a manual method available. Can i for each experiment change the variables of the equation and show the force change and show how it complies? For instance in one experiment i will alter mass, another i will alter radius and the last angular velocity? Thanks
     
  4. Mar 2, 2010 #3

    PhanthomJay

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    The proof is in the calculus; the lab results compare your measurements with the calculated ones. Better check that equation though before you compare anything. Altering mass, radius, and angular velocity is a very good idea....
     
  5. Mar 2, 2010 #4
    thanks for your reply, in relation to checking the equation - im not sure what you mean sorry
     
  6. Mar 2, 2010 #5

    PhanthomJay

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    In post 2 I guess you made a typo error. F = m(w^2)r.
     
  7. Mar 3, 2010 #6
    ahh right thanks
     
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