1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Air resistance force

  1. Sep 24, 2006 #1
    A 1.21 g samara--the winged fruit of a maple tree--falls toward the ground with a constant speed of 1.1 m/s What is the force of air resistance exerted on the samara?
    I know that F=ma
    I also know I have to account for 9.81 N for g. So by upward force am I looking for W? That would be 11.9N.
  2. jcsd
  3. Sep 24, 2006 #2
    correction ...

    1.21 g = 0.00121 kg

    force of air resistance = mg = (.00121 kg)(9.81 m/s^2) = .0119 N
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook