1. Not finding help here? Sign up for a free 30min 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!

Help with a problem.

  1. May 31, 2005 #1
    I have attached an image of the problem. Which should be the height h (expressed in terms of R) if the ball needs to reach the point Q. The ball will roll without slipping.
    In the image, Q is the highest point in the loop. R is the ratio of the loop (think of it as a circle). H is a point on the straight secton of the track, and it is measured respect to the ground.

    Attached Files:

  2. jcsd
  3. May 31, 2005 #2

    Chi Meson

    User Avatar
    Science Advisor
    Homework Helper

    I'll give you a push but you have to do the work yourself.

    Consider the minimum kinetic energy the ball must have to just complete this circular loop without falling. This would be the kinetic energy that corresponds to the tangential speed where the normal force from the track just equals zero.

    Does this ring any bells?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Help with a problem.
  1. Help with this problem (Replies: 4)

  2. Help with force diagram (Replies: 12)