Circular Motion force problem?

  • #1

Homework Statement



Fiction provides the force needed for a car to travel around a flat, circular race track. What is the maximum speed at which a car can safely travel if the radius of the track is 80 meters, and the coefficient of friction is .40?


Homework Equations



Absolutely no clue!

The Attempt at a Solution



I really attempted this problem but came up with nothing worth putting in here. Please help!
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
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fictitious force

Hi glindawantsme! :smile:
Fiction provides the force …

That's exactly why centrifugal force is called a fictitious force! :biggrin:
… needed for a car to travel around a flat, circular race track. What is the maximum speed at which a car can safely travel if the radius of the track is 80 meters, and the coefficient of friction is .40?

Hint: start by calculating the centripetal acceleration at speed v.

Show us what you get, and where you're stuck, and then we'll know how to help. :wink:
 

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