Help me A spinning blue plastic object made me sleepless.

  • Thread starter ltd5241
  • Start date
  • #1
14
0
Help me!!A spinning blue plastic object made me sleepless.

I've seen the mit online vedio course Physics I: Classical Mechanics Lecture 21 Torques, Oscillating Bodies,near the end 44:19.There is a spinning blue plastic object,the teacher spun it, it revolved then it stoped,then it revolved reversely without any other force!
link:http://ocw.mit.edu/OcwWeb/Physics/8-01Physics-IFall1999/VideoLectures/detail/embed21.htm [Broken]
WHY???
 
Last edited by a moderator:

Answers and Replies

  • #2
47
0


That is weird.
 
  • #3
MATLABdude
Science Advisor
1,657
5


Haven't seen the video, but it sounds like a rattleback:
http://en.wikipedia.org/wiki/Rattleback

Nifty little toy. However, nothing really mysterious about it.
 

Related Threads on Help me A spinning blue plastic object made me sleepless.

  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
2
Views
4K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
13
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
5
Views
2K
Top