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!

Hanging swing fair ride

  1. Oct 8, 2003 #1
    hello all this is my first post. I need to know the time to do one complete revolution around the pole.

    .........m
    I------------------
    I........I.........θ......\
    I........I..................\
    I........I....................\..n
    I.............................[]
    I
    I

    m = 3 meters
    n = 5 meters
    θ = 30
    [] = swing
     
  2. jcsd
  3. Oct 8, 2003 #2

    Integral

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Draw a free body diagram, identify the centripetal force acting, Then apply newtons laws to find the radial component of acceleration. Use the relationship between the angluar velocity and the radial component of acceleration to determine the angular velocity.
     
  4. Oct 9, 2003 #3
    here's what I know so far by doing a free body diagram.
    5cos(30)= y
    length y = Sqrt(18.75)
    5sin(30) = x
    length x = 2.5
    R = 3 + 2.5 = 5.5

    using the pythagorean thereom we now that

    sqrt((2.5)^2 + 18.75) = 5

    force y = tcos(30)
    force x = tsin(30)

    circumference = 2pi(R)

    about the forces we know that 5cos(30) = mg
    and that tsin(30) = mω^2R

    now how do I get rpms from this? what do I solve for?

    thanks
     
    Last edited: Oct 9, 2003
  5. Oct 10, 2003 #4

    Integral

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    ω is the rotational velocity in Radians/second. One revolution is 2Π Radians so to get RPM = 2Πω*60
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Hanging swing fair ride
  1. Car ride (Replies: 20)

  2. Mass on a Swing Ride (Replies: 2)

Loading...