1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

The Winging Seed

  1. Dec 11, 2007 #1
    Hello To All.........
    I'm Having A Problem With An Observation...
    In This Observation,If I Release A Maple Seed,It Goes Down In A Rotational Movement.
    The Question Is Why?
    I Hope That Some One Could Help Me.....:smile:
  2. jcsd
  3. Dec 11, 2007 #2


    User Avatar
    Science Advisor

    Take a look at that Maple seed before you release it! It has one "wing" that looks like one part of a propellor. The seed doesn't fall directly down because air pushes up against that "wing". Because of the slant of the "wing", air also pushes it "to the side" causing it to rotate.
  4. Dec 11, 2007 #3


    User Avatar

    Interesting. I don't know what causes it to gain angular momentum, but once it's in the rotating phase, the gyroscopic inertia from its spin opposes anything that will try to stop it from rotating. It rotates around a common centre of mass, and that happens to be close to the "seed" part. Regardless, it just works like a monocopter - the lift generated by the rotation of the wing, and the inertia generated by that rotation just keeps it spinning and spinning.

    Maybe that changes if it hits terminal velocity?
  5. Feb 29, 2008 #4
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Winging Seed Date
I Bernoulli's equation, different streamlines, and wings Feb 10, 2018
B Lift provided by a wing Mar 20, 2016
How wings generate lift? Sep 25, 2015
Ozone seeding idea Sep 22, 2006