StoyanNikolov Posted May 5, 2023 Report Share Posted May 5, 2023 Hi again, I've found interesting video. Roller homopolar motor : Roller Motor Do you think the motor from 1:08 min Will self rotate in Vacuum/Space (No other forces : Gravitational or Other type.) Thank you in advance. Quote Link to comment Share on other sites More sharing options...
Moontanman Posted May 5, 2023 Report Share Posted May 5, 2023 3 hours ago, StoyanNikolov said: Hi again, I've found interesting video. Roller homopolar motor : Roller Motor Do you think the motor from 1:08 min Will self rotate in Vacuum/Space (No other forces : Gravitational or Other type.) Thank you in advance. I see no reason why it wouldn't rotate in a vacuum, why do you think it wouldn't? Quote Link to comment Share on other sites More sharing options...
StoyanNikolov Posted May 5, 2023 Author Report Share Posted May 5, 2023 2 hours ago, Moontanman said: I see no reason why it wouldn't rotate in a vacuum, why do you think it wouldn't? Thank you for the Reply. How much you are confident it will self rotate? I've asked this topic in other forums and the opinions were not so confident. Quote Link to comment Share on other sites More sharing options...
OceanBreeze Posted May 6, 2023 Report Share Posted May 6, 2023 I am fairly confident it will spin in a vacuum because the spinning is self-referential, that is, it does not spin with reference to anything other than itself. Some people may confuse rolling with spinning. Of course, it cannot roll in a vacuum as that requires an external surface to roll on. Moontanman 1 Quote Link to comment Share on other sites More sharing options...
Moontanman Posted May 6, 2023 Report Share Posted May 6, 2023 1 hour ago, OceanBreeze said: I am fairly confident it will spin in a vacuum because the spinning is self-referential, that is, it does not spin with reference to anything other than itself. Some people may confuse rolling with spinning. Of course, it cannot roll in a vacuum as that requires an external surface to roll on. I think you're correct, I think the wire would tend to rotate instead of the battery though. Quote Link to comment Share on other sites More sharing options...
Moontanman Posted May 6, 2023 Report Share Posted May 6, 2023 15 hours ago, StoyanNikolov said: Thank you for the Reply. How much you are confident it will self rotate? I've asked this topic in other forums and the opinions were not so confident. I am pretty much 100% confident that wire would rotate around the battery but the battery is heavier than the wire I would think. Quote Link to comment Share on other sites More sharing options...
Vmedvil Posted May 18, 2023 Report Share Posted May 18, 2023 I agree, it will rotate in the vacuum of space however without touching a object it will not have the friction force that causes to roll. Quote Link to comment Share on other sites More sharing options...
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