Gravity

[0111narwhalz]

Is there a name for the point of zero-net-gravity? Could some objects/collections of objects have multiple such points?

[PB666]

3 hours ago, Matuchkin said:

I already said: given that you are not affected by the pressure.

If there is no pressure then you cannot hear, because hearing is based upon pressure waves in the air.

[Green Baron]

1 hour ago, 0111narwhalz said:

Is there a name for the point of zero-net-gravity? Could some objects/collections of objects have multiple such points?

You are mislead by Kerbal Space Program ...

... because it has no Lagrange Points ;-)

And the point is the center of mass. A massive single object has only one of course. For any multiple bodies there is a barycenter. 

Edited January 11, 2018 by Green Baron

[PB666]

2 hours ago, Green Baron said:

You are mislead by Kerbal Space Program ...

... because it has no Lagrange Points ;-)

And the point is the center of mass. A massive single object has only one of course. For any multiple bodies there is a barycenter. 

Divorce the concept of mass and energy and replace them with field, then remove the idea of point mass with the angle between the query,  the two bodies are such that the cosine between the barycenter and the centers is non-trivially different from 1. From that point the object is mathematically not experiencing the effect of the barycenter but of vector fields (physically 'it' is always the warpage of space-time). If we were to map space-time we would approach the hill sphere isoquants which would give rise to circular isoquants which then would evolve into peanut shaped isoquants (Earth and moon) and then into circular isoquants again. This final motion toward the Earth trivializes moon gravitation effect.

Edited January 12, 2018 by PB666

[Shpaget]

8 hours ago, 0111narwhalz said:

Is there a name for the point of zero-net-gravity? Could some objects/collections of objects have multiple such points?

As mentioned earlier in the thread, in a uniform spherical shell, entire interior is in zero g.

[YNM]

16 hours ago, 0111narwhalz said:

Is there a name for the point of zero-net-gravity?

Potential equilibrium ?

Not necessarily lagrange points I guess.