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!

Help With Lift And Drag Forces On A Ball, Bernoullis Principles.

  1. May 7, 2012 #1
    1. The problem statement, all variables and given/known data
    Any help would be appreciated, whether that is formulas or working out.
    Questions
    For each of the vertical levitation examples calculate the lift force exerted on the ball.

    For each of the inclined levitation examples calculate the lift and drag forces exerted on the ball.

    BeachBall, Circumference = 73cm, Weight = 100g

    Velocities At Different Points On The BeachBall at 90 degrees, From Far Left To Far Right:
    A1: 0.5 m/s
    B1: 5 m/s
    C1: 13.5 m/s
    D (center): 15.5 m/s
    A2: 0.4 m/s
    B2: 5.1 m/s
    C2: 10.5 m/s

    Velocities At Different Points On The BeachBall at 45 degrees, From Far Left To Far Right:
    A1: 0.1 m/s
    B1: 2.2 m/s
    C1: 7.6 m/s
    D (center): 11.2 m/s
    A2: 0 m/s
    B2: 2.5 m/s
    C2: 7.2 m/s

    2. Relevant equations
    Dont know, have attempted to find.


    3. The attempt at a solution
    Formula used:
    F=(1/2)Pv^2CA
    P=density
    A=cross section
    v=velocity
    c=drag coefficient

    CD=2FD/PV^2A

    CD=2FD/110 x 11.2^2 x424

    A= Pi r^2
    Diameter = 23.23
    R= 11.615
     
    Last edited: May 7, 2012
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted



Similar Discussions: Help With Lift And Drag Forces On A Ball, Bernoullis Principles.
  1. Bernoulli's Principle (Replies: 0)

Loading...