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!

Why does this skyscraper stabilizing ball work?

  1. Jun 23, 2008 #1
    I just saw this article about a skyscraper stabilizing ball:

    Why does that work? It's a swinging ball which also has some sort of supports underneath it. Are the supports just there to keep the ball from swinging too far?

    I tried to imagine that this was similar to holding a mace over my head and swaying the mace handle back and forth. But I can't picture it. Why would the mace ball stabilize my hand when held straight up?

    I just can't picture why this works. I saw the animation on that page, but I just don't see why that swinging motion helps to stabilize the skyscraper. Even if it somehow pulls it back, once it starts swinging wouldn't it reinforce the tilt of the skyscraper?
    Last edited by a moderator: Apr 23, 2017
  2. jcsd
  3. Jun 23, 2008 #2


    User Avatar

    Staff: Mentor

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Why does this skyscraper stabilizing ball work?
  1. Why does it work? (Replies: 2)