Timeline for Largest radius sphere with Earth's surface gravity on which you could jump at escape velocity? Bigger than B612?
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 4, 2018 at 1:04 | vote | accept | uhoh | ||
| Nov 1, 2018 at 14:19 | comment | added | Carl Witthoft | @uhoh if you soak your feet in cannabis oil, you'll balance out. | |
| Nov 1, 2018 at 2:11 | comment | added | uhoh | @SteveLinton "Your head would experience about 1/9 of the gravity that your feet do..." I feel like this all the time. Now I find out that it's not normal? | |
| Oct 31, 2018 at 20:54 | comment | added | Steve Linton | @sǝɯɐſ The sphere masses about 100 million tons. It's not going anywhere much. | |
| Oct 31, 2018 at 20:53 | comment | added | Steve Linton | @AviCherry absolutely. Your head would experience about 1/9 of the gravity that your feet do and the question of jumping off the asteroid depends crucially on what position you start in (how far from the centre of the asteroid your centre of mass is). | |
| Oct 31, 2018 at 20:51 | comment | added | sǝɯɐſ | I'm new to all this, but doesn't this assume that the sphere is somehow stationary? Wonder what happens when you add the force of the person pushing off the sphere - it should send the sphere in the opposite direction, no? But then maybe it doesn't actually matter, as the person wouldn't be able to jump as high relative to the starting point? | |
| Oct 31, 2018 at 20:09 | comment | added | Avi Cherry | I wonder, since the length of a human is on the same scale as the size the body, would the gravitational gradient make a big difference? | |
| Oct 31, 2018 at 16:03 | comment | added | Simon | The illustration is pretty much spot on, then :-) | |
| Oct 31, 2018 at 15:03 | review | Suggested edits | |||
| Oct 31, 2018 at 17:09 | |||||
| Oct 31, 2018 at 15:00 | comment | added | Carl Witthoft | OK, so the largest asteroid Le Petit Prince can escape, assuming he can jump 1 meter, is of circumference $2\pi$ meters. Rather a short walk! I bet his asteroids have a surface gravity of more like 0.1g :-) | |
| Oct 31, 2018 at 12:45 | comment | added | uhoh | oh, this is a really nice answer! | |
| Oct 31, 2018 at 12:24 | history | answered | Steve Linton | CC BY-SA 4.0 |