How low would gravity need to be before you could jump off a planet

[Dyn]

This is important I need to know.

 

[Not Really Here]

Less than is found on Demos.

Is it possible to jump into orbit?

A paper has considered whether it is possible to jump into orbit on a body of small mass, such as Mars’s moon Deimos. The authors conclude that it is impossible to jump from the surface of Mars’s moon into a trajectory that would lead to a stable orbit though comment that it may be possible to...

spark.iop.org

 

[Just A Butt]

about 16 feet, that's my guess

 

[DumbDude42]

it'd have to be so low, the thing you're jumping off would have to be so small that it wouldn't qualify as a planet in the first place, more like an asteroid

 

[Shig O'nella]

How athletic are you, is there an atmosphere, and what is the planetoid made of? Can't answer diameter without those bits of information.
In terms of weight, assuming you are an average KF user, anything smaller than 14 trillion tonnes is jump-offable.

 

[Jolly Copulation]

Not sure about an exact number. You would have to escape it's orbit entirely though or you would merely spin around it for hours then come crashing down. General consensus is it would have to be a very small planet, or almost no gravity/atmosphere/magnetosphere. But then you wouldn't be able to breathe there.

 

[mario if smoke weed]

12

 

[DerKryptid]

Lower than your dad's standards for women

 

[MG-34]

Trying to find a creative way of avoiding Australia's lockdowns?

 

[Blackstar]

At least 5

 

[King Fructose]

350 units

 

[User names must be unique]

How low would gravity have to be for the recoil of an m60 fired from the hip could send you into orbit?

 

[MarineTrainedTard]

You're Australian right? Just turn off your magnetic boots and you should just fall right off the Earth

 

[Dyn]

You're Australian right? Just turn off your magnetic boots and you should just fall right off the Earth

We use ground harnesses you retard, dirt isn't magnetic.

 

[Absurdist Laughter]

About as low as Brian Peppers.

 

[Un Platano]

A reasonably unathletic person with a jumping speed of 2.4 m/s (enough to jump about 1 foot in the air) would need a surface gravitational acceleration of 0.00000047 m/s^2 to reach escape velocity, assuming the mass of the earth changes and radius remains constant. At these low accelerations, centripetal acceleration due to the earth's spin is an important consideration and your actual jumping height would increase as you approach the equator.

 

[Irrelevant]

If it was spinning near break up velocity you could simply float off the planet regardless of the gravity.

 

[Make Anime Illegal]

When standing on the surface you would have a gravitational potential energy of U = -GMm/r. Assuming you jump straight up, you'd have to give yourself -U kinetic energy so that you're total energy should be 0. Then you'd go up forever and never fall back down. So 1/2 m v^2 = GMm/r, therefore you'd have to jump up with a velocity v = sqrt(2GM/r).

Where G is the gravitational constant, M/m is the mass of the planet/you, and r is the radius of the planet. Also this is neglecting air resistance and the spin of the planet. The faster the planet spins the less velocity you'd need.

 

[Niggernerd]

You'll need some apple bottom jeans and boots with the fur before you can find out

 

[Penis Drager]

According to the first card that shows up on Google, average human jump velocity is 1.5 m/s
Plug that into an escape velocity calculator and you get 0.000000017983 earth masses (assuming the radius remains constant).