What will happen if i spin something in vaccuum ? it will stop spinning or it will continue to spin?

Question

What will happen if i spin something in vaccuum ? it will stop spinning or it will continue to spin?

Answer 1

Gravity has nothing to do with this problem.

No vacuum is "perfect" so you will have some "atmospheric" drag and if the spinning object is not magnetically suspended then there will be physical contact friction as well.  Either way, no perpetual motion will result.

-Fred

Answer 2

Gravity is relavent because it would require the object to be supported. Even it were magnetically levitated, Ohmic losses would occur and it would slow. If there is no gravity (free fall like in orbit) and nothing collided with it, it would spin as long as the object existed. Asteroids, even small ones, have been spinning for billions of years.

Answer 3

Gravity will affect.

but if gravity is negligible, it will continue to spin..

Answer 4

With reference with Newton's 1st Law of Motion (Inertia)

An object that is spinning will keep on spinning in a vacuum where there is no other force present.

Answer 5

if its in a vacuum, floating in zero g it wont stop

if its in a vacuum on a surface in a lab, the friction from the table will eventually stop it