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: Spring mass on wire on loop

  1. Jan 4, 2004 #1
    Imagine drawing the following figure: draw a circle and a diameter. They are made of massless wire. There's a spring attached a distance d from the center of the hoop on the diameter, and a mass on the other end of the spring.

    Using physical intuition, where would the two stable equibriums and two unstable equilibriums be?

    natural length of spring is 0
    the hoops rolls without slipping
    straight wire is massless
    yes, the mass can slide both ways
    each end of the wire is connected to the loop
  2. jcsd
  3. Jan 5, 2004 #2
    is the pivot point moveable? (i.e. does d=d(t) or does d=const)
  4. Jan 5, 2004 #3
    No, the pivot point of the spring is fixed.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook