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Homework Help: Bassball starting from rest atop 100m building

  1. Sep 7, 2009 #1
    1. The problem statement, all variables and given/known data
    perform a calculation for an object moving vertically in air under gravity and experiencing a retarding force proportional to the square of the objects speed. see (W=.5(cwpAv2)

    Object is dropped off a 100 meter building from rest.
    radius of object = .0366m
    mass = .145 kg

    2. Relevant equations
    F= -mg-W

    3. The attempt at a solution

    trying to find the velocity I get v=((e^(-2kx)-g)/k)^.5 where k= .5cwpA

    but when I graph it for high values of k I get no graph
  2. jcsd
  3. Sep 7, 2009 #2


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    Science Advisor
    Homework Helper
    Gold Member

    Presumably, you have solved a differential equation. what is that equation and how did you get the solution. What does the statement "perform a calculation for an object ..." mean? What are we calculating? You need to be clearer so we can help you.
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