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: Normal Force of a skateboarder at the bottom of a circular ramp

  1. Oct 9, 2006 #1
    A skateboard track has the form of a circular arc with a 3.75 m radius. A 47.0 kg skateboarder starts from rest at the top of the circular arc. What is the normal force exerted on the skateboarder at the bottom of the circular arc?
    I tried using conservation of energy to solve for v
    mgh=1/2 mv^2
    and then I tried plugging that in for F=mv^2/r but it didn't work. How are you supposed to do this problem?
  2. jcsd
  3. Oct 9, 2006 #2
    The weight of the skateboarder is also part of the normal force.
  4. Oct 9, 2006 #3
    So how do I factor that in with the other force equation?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook