In the case where centripital acceleration balances out gravity, the situation you have is that everything on the surface of the planet at the equator is already in orbit. So if the centripital acceleration is actually greater than gravity, you have to be flying fast enough in the direction opposite the spin in order to land. It would be really difficult for land-based life to evolve on such a planet. If it's a water-rich planet, an ocean would form above the surface, and that's where life would evolve.
It can be done in real life. You just have to find a body that's too small and light for hydrostatic equilibrium and can hold itself together by matter attraction, but massive enough for you to feel the gravity.
Quinten Franks it uses about 5 - 10 gallons a day, that may sound like a lot but I'm putting well over 100 gallons on my lawn each day to keep it alive.
So in reality if you did this, I believe it would cook everything on the planet's crust and the wind speed would create a never-ending horizontal rain of glass shards. Fun fun fun!
Oh and consider if a planetoid hit Earth at the right angle this could be us at any given moment. Cosmic billiards has few, if any, short term benefits for meaty carbon bags.
kstansa i would be lesa afraid of crashing down on the surface, then of floating up into the cold vaccum of space that would mercilessly suck all the air out of my lungs....
I did it once with Hyperedit. If my testing is correct, you start going up (on the equator) once the full rotation time drops to 1560 seconds. However, by using the magic of polar regions, I managed to drop it down to 5 seconds! Problem is, the Coriolis effect is so powerful that you go flying at hypersonic velocities at about 50 meters from the north pole.
Sorry, but the best part of the video was the Hitchhikers Guide to the Galaxy quote 😂 I've heard quite a few HG references in your videos. Hands down my favorite book series.
There was an interesting SF short story some years back, by Charles Sheffield, I believe titled 'The Speed of Lightness', about creatures living on a (non-rotating) sphere. One of them, performing physics experiments, discovered that as his test vehicles sped up, they got lighter. The equations (genuine physics) computed a speed, 'c', at which the vehicles would become weightless. A very amusing story...
Interestingly enough, if Scott tried to fly to the west, he would witness his plane beginning to behave more and more "normally" (well, as normally as a plane going 1+km/s acts). Basically, because he would be counteracting the "extra" velocity granted by the spinning of the planet. For the same reason in a theoritical artificial gravity habitat in space walking with the rotation decreases "gravity' (until you start going faster than the rotation, obviously). Likewise, moving around the structure opposite the direction of rotation will increase "gravity" for you. This leads to some hilarious behavior on such a theoretical space station. I.e. if one was to run with the rotation until you reached the rotational speed of the structure (this is slightly harder than is sounds because as you gained speed you would lose traction/downforce/gravity) you could theoretically jump across the structure (because you would be experiencing no "gravity"). Although in reality it would be more like a really long jump, because assuming the structure isn't a vacuum the air would begin to accelerate you back towards rotational speed. This speed isn't as fast as you think, which leads to some issues with small scale structures like this in theoretically space craft. In a 100m radius rotating circle you would experience the force of 1G when rotating at .99m/s. So if I were to walk against the rotation of the structure at a speed of 1 m/s (2.2mph, easily walking speed for a normal person) I would experience a gravitational force of 4G's. You can see why this could be a problem. If I try to walk with the rotation, I quickly lose downforce and end up kind of stumbling along at less than 1G. In the above example you would be effectively "crushing" yourself (similar to how you experience higher G force while pushing off for a jump) so you wouldn't actually die, because you would only experience as much gravity as you could push. However, you can see how this could be dangerous in a motorized vehicle...
You pretty much just showed how the RIngworld has "gravity", interesting to see it in ksp. I always wondered if someone on the ringworld tried launching a rocket into "orbit" (would instantly mean orbit of the star) if they would have to launch to spinward or antispinward
Funnily enough I read Rendezvous With Rama just the other day! I've had Rama 2 sitting on my bookshelf for months but couldn't find a copy of the first one. AFAIK the physics limit in KSP would already let you make a structure in KSP the same scale (since the Kerbol system is 1/10 Earth size I guess Kama would be 5 km long and 2 km across?), but obviously that is a lot less impressive than full size.
"What If" talked about this. The differential pressure between the poles and the equator would create huge turbulence that would destroy everything on the planet
This goes along the lines of having two planets so close together that their atmospheres merge at a point, resulting in an area where gravity nearly cancels itself out. The idea of surrounding a small moon with a konstruct and then making gravity invert like that would be fascinating to see.
Gaalidas the net gravitational force on an object relative to the body you’re standing on could never be greater than 0, even if u had a black hole that we orbited with a radius of 10 meters, that violates Newton’s laws Actually now that I think about it I don’t think it would directly effect the gravitational force u feel on the body ur standing on
Escape velocity is 11.2km/s on earth. Rotational velocity at the equator is .46 km/s. The earth would have to spin 25 faster, about once per hour. You would experience some interesting coriolis effects though. When driving at highway speeds you would experience several hundred pounds of force. This would actually give you more downforce when driving West.
So I've been thinking about this for a while now, and you seen like the perfect person to ask. How fast would the earth have to spin for centrifugal forces to overcome gravity and bring the core to the surface and the surface to the center? I also think it would be interesting to find out how the core flipping to the outside would affect gravity.
i don't think it is possible. this because the effect on thecentrifugal force at the surface will be much bigger than in the center because it's located further from the middlepoint than the center. so the earths surface would probably just fly off.
Been waiting for you to find kopernicus XD EDIT: you can set kerbin's gravity to a negative number, but also manually set the sphere of influence to its normal number otherwise the game breaks EDIT2: you can also use PQSCity to make your own waster eggs similar to the old city mods. Idk how to do the model though
This is how artificial gravity is created in the asteroids of The Expanse.. they make big ones like Ceres , Eros, Pallas and so rotate so they create aceleration outwards and then build tunnels and cavities inside .. therefor the surface becames the floor.. ships docking have to fly "up" into the ground (the advantage is that to fly away they just need to undock and fall). Of course in reality such bodies would break apart most likelly with that rotation and stress.. but it was quite interesting
I've thought about this before. And by my math, the planet would need to spin pretty fast. far faster than what it would take to rip the planet to shreds
if you are flying with the keyboard try using atmosphere autopilot, it will let you limit AOA or G so that you don't stall every time you pitch up or down.
This is such a trip! XD I hate it when the camera in KSP tries to get clever in avoiding objects because it's almost always wrong. (At least it doesn't swerve around dizzyingly like another game I used to play.) I'd rather see the empty inside, _For the world is hollow and I have touched the sky._
The only thing that would have been better than shooting that first wolf with the flare would have been doing that at night! It was pretty awesome though! :)
There is no any force.You already have enought speed to fly up.You already in orbit and air doesn't slow down you because it rotates, too.Planet is like giant Artifical Gravity Ring.And not works on poles.
Momentum probably. The ship is already moving at the speed of the planet and it doesn't instantly lose it's momentum when it's not touching the planet. So it will continue to move at that speed.
There would be no force pushing you away. Since you're spinning incredibly quickly your inertia would cause you to travel in a straight line the second you let go of the earth, and it's only due to gravity that scott doesn't fly off the surface at 2 km/s.
It would be really sick if there were other places to go and .. that if you could tell a Kerbal to fly to a point, and then you fly and rendezvous with it and fuel it up....
The one feature I still feel is sorely missing is better acceleration-based handling of kerbal walking... Even a mod for that would really make the game complete for me
Oh my god. This is so impressive. It is unconventional though. Inverted gravity can cause various problems. Examples are polarity shifts, magnetosphere imbalance, atmospheric deterioration, and death of the planet and its inhabitants
Uff, poor Australians, now I understand them
Please give us your knowledge.
Possums are adorable in Australia
Dear diary, today I watched a bald man land a plane on the underside of an upside down runway floating in the sky.
You forgot the part at the end where he shot a wolf with a flare gun and burned it alive for some reason.
I feel like this is what flat-earthers think normal people think the Earth is
IronTomato spinning ball? Why don't people rotate every 24 hours!
Peter Smythe Checkmate atheists
Well they dont think anything, so....
@@irontomato3835 the fact that that's a meme is depressing.
IronTomato ☆ 4:20 ☆ "Do a Barrel Roll!"
20 years ago I saw an Orion P-3 do a barrel roll over the San Pedro River in Cochise County. Epically Epic.
You walk outside in the morning then you slowly hover up and next thing you know you are in orbit. Fun!
*Rayvin* That feeling when you realise you're standing on the ceiling
In the case where centripital acceleration balances out gravity, the situation you have is that everything on the surface of the planet at the equator is already in orbit. So if the centripital acceleration is actually greater than gravity, you have to be flying fast enough in the direction opposite the spin in order to land. It would be really difficult for land-based life to evolve on such a planet. If it's a water-rich planet, an ocean would form above the surface, and that's where life would evolve.
Bring a mayonnaise jar in case you get hungry, and maybe if you need a helmet.
XD
I've had that dream before. I wind up grabbing onto a lampost or something, trying to climb back down.
"That's what the pros do, they don't crash into the ground." - Scott Manley, 2017
"in exactly the way that bricks don't."
My all-time favorite H2G2 quote ever.
This version of flying is basically "aim for the ground and miss" so this works.
Ah I actually was wondering about this a while back, thanks for the video!
Hello from Okinawa, Cody, big fan. Question - have you been able to reliably measure water loss in your hydroponics system?
Cody'sLab not really the kind of experiment you can do in your back yard, or in real life for that matter.
It can be done in real life. You just have to find a body that's too small and light for hydrostatic equilibrium and can hold itself together by matter attraction, but massive enough for you to feel the gravity.
Quinten Franks
it uses about 5 - 10 gallons a day, that may sound like a lot but I'm putting well over 100 gallons on my lawn each day to keep it alive.
You do seem like the person that has a Kerbal addiction ;)
3:17 just a regular flight in australia
So in reality if you did this, I believe it would cook everything on the planet's crust and the wind speed would create a never-ending horizontal rain of glass shards.
Fun fun fun!
In reality you wouldn't go up
Oh and consider if a planetoid hit Earth at the right angle this could be us at any given moment. Cosmic billiards has few, if any, short term benefits for meaty carbon bags.
you would, but so would the ground
Mmmmmmmm, Chicago Style Planet Pizza...
frcition between atmossphere and ground, i guess
Jeb walking on his head made my day :)
I see that some of the greatest people on Earth are subbed to Scott Manely.
I love ur vids notice me
What's up :)
Mayday!!! We're Going Up!!!
o noooo
kstansa i would be lesa afraid of crashing down on the surface, then of floating up into the cold vaccum of space that would mercilessly suck all the air out of my lungs....
Daniel Cannata blow
Did you really land that plane, or did you sky it?
god damnit
...Barb!
@@2nd-place I got that reference
burn.
Oh don’t get me started on that
That first reverse-takeoff flipping the plane 360 vertically was absolutely epic!
KSP - Australian edition.
ALL WINGS ATTACHED !
If I ever get to fly a plane, that's what I'll shout every time I land.
If the planet was spinning this fast wouldn't it just break apart due to the centrifugal force?
photonman54 yes.
Yep, minor details.
Or, more accurately, an outward directed force.
Edit: No outward directed force, only centripetal force.
microproductions6 That's more vague, not more accurate.
I mean there is no centrifugal force, only center directed, or centripetal force. I will clarify my earlier comment to reflect this.
"Hanging in the sky in much the same way as bricks don't" nice Hitchhikers reference. Always appreciated.
World spun so fast it flung Scott into an entirely different game! WOW!
hey scott, not sure if you're aware but at around 17:40 it switches to a totally different game.
I'm pretty sure he was aware of that, because he said "Is that a wolf?" And there are no wolves in KSP.
@@cedrick25 unless he messed up in editing and didn't realize those clips were added to this video. twit.
Scott Manley, why are you still not verified?
microproductions6 he was "hacked" once and recovering from a leaked stream key isn't easy
Came here for shenanigans, stayed for the Hitchhiker's Guide reference.
I did it once with Hyperedit. If my testing is correct, you start going up (on the equator) once the full rotation time drops to 1560 seconds. However, by using the magic of polar regions, I managed to drop it down to 5 seconds! Problem is, the Coriolis effect is so powerful that you go flying at hypersonic velocities at about 50 meters from the north pole.
i was doing the same stuff ,;)
Jesus that sounds horrifyingly fun!
*urge to play KSP intensifies*
The best example was, and is, Inaccessable from Kragrathea's Planet factory (nowdays Sentar expansion).
Lajos Winkler yes i remember this. And scott tried to land on it with a grapple from KAS.
and also this planet caused some... weird stuff.
This gives "powered landing" an entirely new meaning!
This is crazy. :D
hey SWDennis :D
You're crazy. xD
what i'm wondering is does it accelerate fast enough to get fire on the craft if you go strait up
Yup. I sense a video idea sometime in the future implementing this. Even though this was 8 months ago
3:07 Hitchhiker's guide to the galaxy reference s2
Sorry, but the best part of the video was the Hitchhikers Guide to the Galaxy quote 😂 I've heard quite a few HG references in your videos. Hands down my favorite book series.
There was an interesting SF short story some years back, by Charles Sheffield, I believe titled 'The Speed of Lightness', about creatures living on a (non-rotating) sphere. One of them, performing physics experiments, discovered that as his test vehicles sped up, they got lighter. The equations (genuine physics) computed a speed, 'c', at which the vehicles would become weightless. A very amusing story...
Interestingly enough, if Scott tried to fly to the west, he would witness his plane beginning to behave more and more "normally" (well, as normally as a plane going 1+km/s acts). Basically, because he would be counteracting the "extra" velocity granted by the spinning of the planet.
For the same reason in a theoritical artificial gravity habitat in space walking with the rotation decreases "gravity' (until you start going faster than the rotation, obviously). Likewise, moving around the structure opposite the direction of rotation will increase "gravity" for you. This leads to some hilarious behavior on such a theoretical space station. I.e. if one was to run with the rotation until you reached the rotational speed of the structure (this is slightly harder than is sounds because as you gained speed you would lose traction/downforce/gravity) you could theoretically jump across the structure (because you would be experiencing no "gravity"). Although in reality it would be more like a really long jump, because assuming the structure isn't a vacuum the air would begin to accelerate you back towards rotational speed.
This speed isn't as fast as you think, which leads to some issues with small scale structures like this in theoretically space craft. In a 100m radius rotating circle you would experience the force of 1G when rotating at .99m/s. So if I were to walk against the rotation of the structure at a speed of 1 m/s (2.2mph, easily walking speed for a normal person) I would experience a gravitational force of 4G's. You can see why this could be a problem. If I try to walk with the rotation, I quickly lose downforce and end up kind of stumbling along at less than 1G.
In the above example you would be effectively "crushing" yourself (similar to how you experience higher G force while pushing off for a jump) so you wouldn't actually die, because you would only experience as much gravity as you could push. However, you can see how this could be dangerous in a motorized vehicle...
Wasn't there already a mod which added a ridiculously fast-spinning planet, where the equator rotated faster than escape velocity?
Yep, this is just taking that idea new places.
Timothy McLean *INACCESSIBLE*
If I'm thinking correctly, that was the Krag's Planet Factory mod, and it was a planet called Inaccessible.
You pretty much just showed how the RIngworld has "gravity", interesting to see it in ksp. I always wondered if someone on the ringworld tried launching a rocket into "orbit" (would instantly mean orbit of the star) if they would have to launch to spinward or antispinward
When you realize that Scott here can do anything but land a plane properly...
Sitting at bar
Scott Manley walks over
"Hey wanna have some fun... No wings attached?"
When making a planet pack, one of the moons I made spin too fast and this happened. I had no idea what was going on.
20:30 Scott Manley, the professional CS:GO player.
Ah i love rendezvous with Rama, what a great series. good reference Scott.
Funnily enough I read Rendezvous With Rama just the other day! I've had Rama 2 sitting on my bookshelf for months but couldn't find a copy of the first one.
AFAIK the physics limit in KSP would already let you make a structure in KSP the same scale (since the Kerbol system is 1/10 Earth size I guess Kama would be 5 km long and 2 km across?), but obviously that is a lot less impressive than full size.
Holy moly, I might actually be able to get into orbit now...
Loved that hitchhiker's guide reference at 3:06.
"What If" talked about this. The differential pressure between the poles and the equator would create huge turbulence that would destroy everything on the planet
Danny the guy who makes crazy stuff is so going to make a Death Star using this
Still seems inexplicably louder than every other video on youtube. Shame when the content is so stellar!
I love the hitchhikers guide reference
Now for some Vogon poetry
*dies*
They couldn't possibly have thought of that. Couldn't possibly have.
They did. I am amazed this worked at all.
9:45 WHAT IS THAT RED ORBIT
thats me
Might be an example for a satellite contract
I don't think this is on a carrer save
Yeah, this is on sandbox.
@@spacekraken666 Fake kracken! Only Danny can summon the real one!
This goes along the lines of having two planets so close together that their atmospheres merge at a point, resulting in an area where gravity nearly cancels itself out. The idea of surrounding a small moon with a konstruct and then making gravity invert like that would be fascinating to see.
Gaalidas the net gravitational force on an object relative to the body you’re standing on could never be greater than 0, even if u had a black hole that we orbited with a radius of 10 meters, that violates Newton’s laws
Actually now that I think about it I don’t think it would directly effect the gravitational force u feel on the body ur standing on
Escape velocity is 11.2km/s on earth. Rotational velocity at the equator is .46 km/s. The earth would have to spin 25 faster, about once per hour. You would experience some interesting coriolis effects though. When driving at highway speeds you would experience several hundred pounds of force. This would actually give you more downforce when driving West.
When Kites achieve escape velocity
So I've been thinking about this for a while now, and you seen like the perfect person to ask. How fast would the earth have to spin for centrifugal forces to overcome gravity and bring the core to the surface and the surface to the center? I also think it would be interesting to find out how the core flipping to the outside would affect gravity.
Miguel724 enough to rip it apart
Miquel724 WUT!?!
i don't think it is possible. this because the effect on thecentrifugal force at the surface will be much bigger than in the center because it's located further from the middlepoint than the center. so the earths surface would probably just fly off.
The earth would form a disc shape. The core would remain in the centre.
Wouter Pattyn so then let's just assume it's only the core that's spinning at these speeds. What then?
Been waiting for you to find kopernicus XD
EDIT: you can set kerbin's gravity to a negative number, but also manually set the sphere of influence to its normal number otherwise the game breaks
EDIT2: you can also use PQSCity to make your own waster eggs similar to the old city mods. Idk how to do the model though
Forget space elevators, just accelerate the earth so the atmosphere itself goes into orbit
The Tycho corporation called, they want Ceres’ spin gravity back.
Some say that first wolf can still be seen for miles to this day...
Only Scott Manley could pull off a J-turn in a cargo plane.
This gave me a headache, I can't unsee upside down.
The Laythe winter looks harsh. Stow the flare gun, plant a flag, switch back to free camera, and blast out of there before more alien wolves turn up.
Creating artificial gravity on a naturally gravitational object. Classic Scott Manly.
I love building bases with Kerbals konstructs
Make the planet spin so fast that the flat kerbin society is right.
That is impossible. What would prevent the edges from flying away? KSP physics won't permit that anyway.
This is how artificial gravity is created in the asteroids of The Expanse.. they make big ones like Ceres , Eros, Pallas and so rotate so they create aceleration outwards and then build tunnels and cavities inside .. therefor the surface becames the floor.. ships docking have to fly "up" into the ground (the advantage is that to fly away they just need to undock and fall).
Of course in reality such bodies would break apart most likelly with that rotation and stress.. but it was quite interesting
Depends on the asteroid. Some are more solid than others.
Love the nod to Douglas Adams.
Nobody:
Scott Manley: this video
On a rate scale of one to ten, how would you rate dogs?
Scott thinks they're pretty lit.
The irony about this is that, in this sort of world, it is hanging it the sky, in exactly the same way as bricks *DO.*
I've thought about this before. And by my math, the planet would need to spin pretty fast. far faster than what it would take to rip the planet to shreds
if you are flying with the keyboard try using atmosphere autopilot, it will let you limit AOA or G so that you don't stall every time you pitch up or down.
Try the Eötvös effect! If you fly towards west fast enough, things should fall down again according Eötvös effect
Well he mentioned it
That's how the Australian space programm looks like!
Kerbal Space Program: Crimes against physics simulator!
What would be really interesting is getting it balanced so you stick to the surface, but only just.
I'm not sure what that last wolf-hunting part had to do with anything, but it was fun :D
It was a livestream and I wanted to play The Long Dark
@19:41, @20:30 Never go up against Scott when he's got a rocket targeted at you!
This is such a trip! XD
I hate it when the camera in KSP tries to get clever in avoiding objects because it's almost always wrong. (At least it doesn't swerve around dizzyingly like another game I used to play.) I'd rather see the empty inside, _For the world is hollow and I have touched the sky._
Easiest VTOL ever.
Do a reentry and landing like this! I wonder what it would look like.
The scottish man who flipped gravity
You shoul'd try to go retrograd until your apoapsis go back inside the planet and see what append then!
The only thing that would have been better than shooting that first wolf with the flare would have been doing that at night! It was pretty awesome though! :)
What force would be pushing you away from the planet once your legs disconnected from the planet surface?
ares106 the air. **kinda**
There is no any force.You already have enought speed to fly up.You already in orbit and air doesn't slow down you because it rotates, too.Planet is like giant Artifical Gravity Ring.And not works on poles.
ares106 centrifugal
Momentum probably. The ship is already moving at the speed of the planet and it doesn't instantly lose it's momentum when it's not touching the planet. So it will continue to move at that speed.
There would be no force pushing you away. Since you're spinning incredibly quickly your inertia would cause you to travel in a straight line the second you let go of the earth, and it's only due to gravity that scott doesn't fly off the surface at 2 km/s.
This reminds me of Inaccessible from the Krag Planet Factory all those years ago...
The atmosphere would be going so fast it would also leave, so wings would do nothing.
My honey appears to be be the wrong shade of honey.
So it is thanks to Scott that NERVs only use LF now?
Thank you Scott!
17:20 Nice crosswind technique. huehuehue
It would be really sick if there were other places to go and .. that if you could tell a Kerbal to fly to a point, and then you fly and rendezvous with it and fuel it up....
Is this how it feels to live in Australia
With the rotation hacked you could build a SPACE TRAIN!
Play this in VR and see how long it takes you to get sick.
"It's picking up a bit of a shimmy!"
The one feature I still feel is sorely missing is better acceleration-based handling of kerbal walking... Even a mod for that would really make the game complete for me
This is a good planet idea for ksp2
Liked the video for the epic backflip takeoff
Bad dogs are not born, they are made.
a planet like this would be really cool in KSP 2
Make it spin so fast that you are always thrown onto moon orbit height
I still want to see you (or Danny) use the wind mood to make a tornado at the North Pole
Oh my god. This is so impressive. It is unconventional though. Inverted gravity can cause various problems. Examples are polarity shifts, magnetosphere imbalance, atmospheric deterioration, and death of the planet and its inhabitants
I disagree with your last point. What inhabitants are you talking about? They are already in space.
Antoine Chauvet good point.
You never tried putting down a flag on the runway.
Most brilliant idea ever, reverse gravity!!!!!!!