Anchorxiety@reddthat.com to No Stupid Questions@lemmy.world · 6 days agoIf something could rotate infinitely after being initially pushed, would the initial push disqualify it from being classed as perpetual motion?message-squaremessage-square19fedilinkarrow-up118arrow-down10
arrow-up118arrow-down1message-squareIf something could rotate infinitely after being initially pushed, would the initial push disqualify it from being classed as perpetual motion?Anchorxiety@reddthat.com to No Stupid Questions@lemmy.world · 6 days agomessage-square19fedilink
minus-squaremvirts@lemmy.worldlinkfedilinkarrow-up19·5 days agoPerpetual motion is everywhere in space. Using that motion for doing work will always change the motion, and it will eventually no longer be useful. This is what a perpetual motion machine tries to do but can not.
minus-squarenomad@infosec.publinkfedilinkarrow-up9·5 days agoAFAIK even space will cool down and stop eventually. So not perpetual motion very low friction motion? I know that expansion also plays a role.
minus-squarebufalo1973@piefed.sociallinkfedilinkEnglisharrow-up1arrow-down1·3 days agoIf you think about it, when the universe cools down, maybe some rocks will fly forever without hitting anything.
minus-squarenomad@infosec.publinkfedilinkarrow-up1·2 days agoA cooled down universe does not move at all AFAIK. please Look up Brownian motion.
minus-squarebufalo1973@piefed.sociallinkfedilinkEnglisharrow-up2·2 days agoIf a rock is moving between galaxies, what would make it stop?
minus-squarenomad@infosec.publinkfedilinkarrow-up1·21 hours agoDoes a given mass ever get outside the influence of both galaxy’s gravity influences?
minus-squarebufalo1973@piefed.sociallinkfedilinkEnglisharrow-up1arrow-down1·8 hours agoWhy not? When two galaxies collide some rocks can get enough speed to escape.
minus-squarenomad@infosec.publinkfedilinkarrow-up1·3 hours agoAFAIK galaxies don’t collide, they merge. There is usually no collision due to the massive empty spaces inbetween stars.
Perpetual motion is everywhere in space. Using that motion for doing work will always change the motion, and it will eventually no longer be useful. This is what a perpetual motion machine tries to do but can not.
AFAIK even space will cool down and stop eventually. So not perpetual motion very low friction motion? I know that expansion also plays a role.
If you think about it, when the universe cools down, maybe some rocks will fly forever without hitting anything.
A cooled down universe does not move at all AFAIK. please Look up Brownian motion.
If a rock is moving between galaxies, what would make it stop?
Does a given mass ever get outside the influence of both galaxy’s gravity influences?
Why not? When two galaxies collide some rocks can get enough speed to escape.
AFAIK galaxies don’t collide, they merge. There is usually no collision due to the massive empty spaces inbetween stars.