A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 5 years ago

A curve of radius 80 meters is properly banked for a car travelling at 60km/hr, what should the coefficient of friction be for a car travelling at 90km/hr?

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    If the road is properly banked for a car traveling 60km/h, then the no friction is required for a car at that speed. Forces up = forces down, and net force acting on the car is Fcentripetal towards the center since it is going in a circle. Force down is the weight of the car = mg. Force up has to be supplied by a component of the normal force The centripetal force = mv^2/r must be supplied by another component of the normal force. Setting up these equations will give you the angle the road is banked at. Once you know that, you can find what frictional force would be needed to overcome the increase in centripetal force (v goes up from 70km/h to 90 km/h).

  2. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ... up from 60km/h to 90 km/h... sorry

  3. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.