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: Rod Question

  1. May 22, 2005 #1
    A vertical rod of length 'l' rests on a smooth plane and starts falling over under the influence of a slight disturbance. What is the locus of 1) center of the rod 2) A point halfway between the center and the bottom 3) The top of the rod?
  2. jcsd
  3. May 22, 2005 #2


    User Avatar
    Science Advisor
    Homework Helper

    "Smooth" means frictionless, so there can be no horizontal force applied to the rod. The motion of the center of mass of a rigid body is determined by the sum of forces acting on the body. How must the center of mass move? Where is the center of mass? What happens to the point in contact with the plane? What happens to the other points in question?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook