1. Limited time only! Sign up for a free 30min personal 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!

Circular motion question

  1. Apr 22, 2015 #1
    Such as the figure
    c47166411v146.png

    Why the string could not be horizontal when the rubber bungis moving in a horizontal circle?
    Only moving at conical pendulum?

    By the way, if tension is equal to weight(W), have any conclusion?
     
  2. jcsd
  3. Apr 22, 2015 #2

    CWatters

    User Avatar
    Science Advisor
    Homework Helper


    Write an equation for the vertical forces acting on the bung. Set θ = 90 and see what happens.
     
  4. Apr 22, 2015 #3

    andrevdh

    User Avatar
    Homework Helper

    What do you know about the force that is required to make an object move in a circle?
     
  5. Apr 22, 2015 #4
    centripetal force
     
  6. Apr 22, 2015 #5

    andrevdh

    User Avatar
    Homework Helper

    Correct. That is the resultant force on the object needs to point to the centre of the circle.
    In this case it means that the resultant of the two vectors must point to the center of
    the circle. If the string could be horizontal where would the resultant lie?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Circular motion question
Loading...