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 help

  1. Mar 21, 2008 #1
    1. The problem statement, all variables and given/known data
    The problem is shown in the attachment.


    2. Relevant equations



    3. The attempt at a solution

    I have no idea how to answer these questions as I was absent at the time so could someone please explain to me how to work these out please?
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     

    Attached Files:

  2. jcsd
  3. Mar 21, 2008 #2

    Air

    User Avatar

    Clues:


    a) They are asking for the direction of the centripetal acceleration.

    b) They are asking for the direction of the centripetal force.

    c) If velocity is applied, then it moves at tangent. Something is needed to make it travel in circle.

    d) Calculate [itex]v[/itex] using [itex]v = \frac{distance (circumference)}{time}[/itex] and then use formula [itex]f = \frac{mv^2}{r}[/itex].

    e) Think about [itex]f = ma[/itex]. If time period changes then the iron ball may be speeding up.
     
    Last edited: Mar 21, 2008
  4. Mar 21, 2008 #3
    I don't understand... i'm sorry
     
  5. Mar 21, 2008 #4

    rock.freak667

    User Avatar
    Homework Helper

    Do you actually understand what is circular motion and what is "centripetal force" ?
     
  6. Mar 22, 2008 #5

    Air

    User Avatar


    Circular Motion Explained.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Circular motion help
  1. Circular Motion help (Replies: 6)

Loading...