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: Mechanics problem

  1. Apr 26, 2006 #1
    a ball is connected to a string with length L and is swung around a horizontal axis. On top of the ball sits a fly. At the bottom of the path, the speed of the ball is v, and I need to find what force should be exerted by the ball on the fly to keep it from falling. This is confusing to me because the only forces on the fly are downward, and I'm not sure how to combine the knowledge I have about the velocity with the forces. I also know the masses of the ball and fly(ball=M, fly=2M)
    Last edited: Apr 26, 2006
  2. jcsd
  3. Apr 27, 2006 #2
    I think it has to do with the fact that acceleration in a circular path is v^2/R, but I'm not sure how
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook