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: Normal Force

  1. Dec 10, 2009 #1
    1. The problem statement, all variables and given/known data
    a 1,000 kg car coasts into a slight dip in the road. The radius of the dip is 200-m. At the bottom of the dip the speed of the car is 10 m/s.
    what is the magnitude and dirrection of the normal force?


    2. Relevant equations
    Sum of f=ma to find acceleration.


    3. The attempt at a solution
    the acceleration would be .5 m/s/s so wouldnt it just be .5*1000
    the answer says it should be 10300 though.
     
  2. jcsd
  3. Dec 10, 2009 #2

    rock.freak667

    User Avatar
    Homework Helper

    there is the normal force acting as well as weight. The resultant of these two provide the centripetal force, mv2/r
     
  4. Dec 10, 2009 #3
    so what steps do i take first?
     
  5. Dec 10, 2009 #4

    rock.freak667

    User Avatar
    Homework Helper

    Write down the resultant force in terms of the normal reaction and the weight
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook