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!

Circular Motion and acceleration

  1. Jul 22, 2007 #1
    Ok, for the circular motion, where we are suppose to have 0 acceleration,
    this is the problem i have

    My question ask for mass of the washers and paper clips by equating Fc to Fg,

    and I am given the # of washers,
    The radius
    and the mass of the stopper.

    and the period

    now it ask me for mass


    how do i find this?
    i kno that
    Fc = mv^2/r
    or
    Fc = 4pi^2rm/T^2
    and
    Fg = mg,
    but how do i do it?
    i can't seem to figure it out,
    even after i figure out the speed, it doesn't help, i have 2 unknowns...The
    Fc, and the mass...
    help please?


    Incase this helps, i am swinging the tubber sopper, with a tube, and below the tube is the paper clip to keep my distance so i kno i am swinging at a constant speed, then at the end of string is my washers for the mass.
     
    Last edited: Jul 22, 2007
  2. jcsd
  3. Jul 22, 2007 #2

    Doc Al

    User Avatar

    Staff: Mentor

    The centripetal acceleration is certainly not zero!

    OK.

    So you are given the mass of the stopper and you must compute the mass of the washers?


    What mass does m stand for here?
    What mass does m stand for here?

    Realize that those equations use different masses: one uses the known mass of the stopper; the other uses the unknown mass of the washers.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Circular Motion and acceleration
Loading...