A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
In one of the physics I lectures, Lewin was able to make a top spin forever (or at least half an hour and more). What's the trick?
anonymous
 5 years ago
In one of the physics I lectures, Lewin was able to make a top spin forever (or at least half an hour and more). What's the trick?

This Question is Closed

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The amount of time that the top spins would be a function of its initial angular momentum and the friction of the top against air and the surface its spinning on. Thus, the longest spin would come from a top which is very smooth, has a very smooth tip spinning on a smooth surface (all to reduce friction), and is very heavy, wide, and has a large initial angular velocity. I am of course assuming here that the top is also very well balanced. Basically, its not really a trick, its just a matter of spinning a very good top very fast on a lowfriction surface.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.