1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Circular Motion

  1. Nov 16, 2011 #1
    A person drives a car over the top of a hill, the cross section of which can be approximated by a circle of radius r=250m. What is the greatest speed at which he can drive without the car leaving the road at the top of the hill?

    I know that the maximum speed occurs when the normal force= zero. And by my calculations vmax=√rg (where r is the radius and g is the acceleration of gravity)

    Is this all I need? Am I missing anything?
  2. jcsd
  3. Nov 16, 2011 #2


    User Avatar
    Science Advisor
    Homework Helper

    Seems ok to me. What to you think you might be missing?
  4. Nov 16, 2011 #3
    I didn't think there was anything missing, this is just me being paranoid I guess. Thank you
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook