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Homework Help: Fallin with constant speed what is the force of air resistnace

  1. Sep 21, 2009 #1
    1. The problem statement, all variables and given/known data
    A 1.26 samara-the winged fruit of a maple tree-falls toward the ground with a constant speed of 1.1
    What is the force of air resistance exerted on the samara?

    2. Relevant equations

    F=ma I thought that the force of air resistance would have to be equal to mg

    3. The attempt at a solution
    I tried 12.4N but said I was wrong, not sure what to do now? Any help please.
  2. jcsd
  3. Sep 21, 2009 #2
    Hey man the fruit experience a drag force and a resistive force(air resist) against its motion so the forces in the x direction of the fruit would be f+Fa=ma where f is the drag force and Fa the air resist. constant speed would mean the terminal velocity with that you can find the drag force just use these values and you can find the air resistance.
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