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!

Tough mechanics problem

  1. Jan 17, 2006 #1
    problem: a common demonstration, consists of a ball resting at one end of a uniform board of length =L, hinged at the other end, and elevated at an angle theta. a light cup is attached to the board at a distance d from the hinge so that it will catch the ball when the support stick is suddenly removed, which means that d=Lcos(theta) show that the ball will lag behind the falling board when theta is less than 35.3 degrees.

    ive found the free acceleration of the end of the beam and the center of mass of the beam which are 3/2g and 3/4g respectively but am not sure where to go from there??
  2. jcsd
  3. Jan 17, 2006 #2


    User Avatar
    Science Advisor
    Homework Helper

    Shouldn't the acceleration at the end of the board depend on the angle of elevation?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Tough mechanics problem
  1. Tough Friction Problem. (Replies: 11)

  2. Tough physics Problem (Replies: 1)